20130780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1$

素因数の和:259

約数の個数: 96

約数和(自身を含む): 59351040

約数和(自身を除く): 39220260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 60, 62, 79, 93, 124, 137, 155, 158, 186, 237, 274, 310, 316, 372, 395, 411, 465, 474, 548, 620, 685, 790, 822, 930, 948, 1185, 1370, 1580, 1644, 1860, 2055, 2370, 2449, 2740, 4110, 4247, 4740, 4898, 7347, 8220, 8494, 9796, 10823, 12245, 12741, 14694, 16988, 21235, 21646, 24490, 25482, 29388, 32469, 36735, 42470, 43292, 48980, 50964, 54115, 63705, 64938, 73470, 84940, 108230, 127410, 129876, 146940, 162345, 216460, 254820, 324690, 335513, 649380, 671026, 1006539, 1342052, 1677565, 2013078, 3355130, 4026156, 5032695, 6710260, 10065390, 20130780]

約数ペア:

[(1, 20130780), (2, 10065390), (3, 6710260), (4, 5032695), (5, 4026156), (6, 3355130), (10, 2013078), (12, 1677565), (15, 1342052), (20, 1006539), (30, 671026), (31, 649380), (60, 335513), (62, 324690), (79, 254820), (93, 216460), (124, 162345), (137, 146940), (155, 129876), (158, 127410), (186, 108230), (237, 84940), (274, 73470), (310, 64938), (316, 63705), (372, 54115), (395, 50964), (411, 48980), (465, 43292), (474, 42470), (548, 36735), (620, 32469), (685, 29388), (790, 25482), (822, 24490), (930, 21646), (948, 21235), (1185, 16988), (1370, 14694), (1580, 12741), (1644, 12245), (1860, 10823), (2055, 9796), (2370, 8494), (2449, 8220), (2740, 7347), (4110, 4898), (4247, 4740)]