1991255860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1$

素因数の和:219

約数の個数: 192

約数和(自身を含む): 5037096960

約数和(自身を除く): 3045841100

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 31, 38, 44, 55, 62, 76, 95, 110, 121, 124, 127, 155, 190, 209, 220, 242, 254, 310, 341, 380, 418, 484, 508, 589, 605, 620, 635, 682, 836, 1045, 1178, 1210, 1270, 1331, 1364, 1397, 1705, 2090, 2299, 2356, 2413, 2420, 2540, 2662, 2794, 2945, 3410, 3751, 3937, 4180, 4598, 4826, 5324, 5588, 5890, 6479, 6655, 6820, 6985, 7502, 7874, 9196, 9652, 11495, 11780, 12065, 12958, 13310, 13970, 15004, 15367, 15748, 18755, 19685, 22990, 24130, 25289, 25916, 26543, 26620, 27940, 30734, 32395, 37510, 39370, 41261, 43307, 45980, 48260, 50578, 53086, 61468, 64790, 71269, 74803, 75020, 76835, 78740, 82522, 86614, 101156, 106172, 126445, 129580, 132715, 142538, 149606, 153670, 165044, 169037, 173228, 206305, 216535, 252890, 265430, 285076, 291973, 299212, 307340, 338074, 356345, 374015, 412610, 433070, 476377, 505780, 530860, 583946, 676148, 712690, 748030, 783959, 822833, 825220, 845185, 866140, 952754, 1167892, 1425380, 1459865, 1496060, 1567918, 1645666, 1690370, 1905508, 2381885, 2919730, 3135836, 3211703, 3291332, 3380740, 3919795, 4114165, 4763770, 5240147, 5839460, 6423406, 7839590, 8228330, 9051163, 9527540, 10480294, 12846812, 15679180, 16058515, 16456660, 18102326, 20960588, 26200735, 32117030, 36204652, 45255815, 52401470, 64234060, 90511630, 99562793, 104802940, 181023260, 199125586, 398251172, 497813965, 995627930, 1991255860]

約数ペア:

[(1, 1991255860), (2, 995627930), (4, 497813965), (5, 398251172), (10, 199125586), (11, 181023260), (19, 104802940), (20, 99562793), (22, 90511630), (31, 64234060), (38, 52401470), (44, 45255815), (55, 36204652), (62, 32117030), (76, 26200735), (95, 20960588), (110, 18102326), (121, 16456660), (124, 16058515), (127, 15679180), (155, 12846812), (190, 10480294), (209, 9527540), (220, 9051163), (242, 8228330), (254, 7839590), (310, 6423406), (341, 5839460), (380, 5240147), (418, 4763770), (484, 4114165), (508, 3919795), (589, 3380740), (605, 3291332), (620, 3211703), (635, 3135836), (682, 2919730), (836, 2381885), (1045, 1905508), (1178, 1690370), (1210, 1645666), (1270, 1567918), (1331, 1496060), (1364, 1459865), (1397, 1425380), (1705, 1167892), (2090, 952754), (2299, 866140), (2356, 845185), (2413, 825220), (2420, 822833), (2540, 783959), (2662, 748030), (2794, 712690), (2945, 676148), (3410, 583946), (3751, 530860), (3937, 505780), (4180, 476377), (4598, 433070), (4826, 412610), (5324, 374015), (5588, 356345), (5890, 338074), (6479, 307340), (6655, 299212), (6820, 291973), (6985, 285076), (7502, 265430), (7874, 252890), (9196, 216535), (9652, 206305), (11495, 173228), (11780, 169037), (12065, 165044), (12958, 153670), (13310, 149606), (13970, 142538), (15004, 132715), (15367, 129580), (15748, 126445), (18755, 106172), (19685, 101156), (22990, 86614), (24130, 82522), (25289, 78740), (25916, 76835), (26543, 75020), (26620, 74803), (27940, 71269), (30734, 64790), (32395, 61468), (37510, 53086), (39370, 50578), (41261, 48260), (43307, 45980)]