245353840

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1$

素因数の和:231

約数の個数: 160

約数和(自身を含む): 639959040

約数和(自身を除く): 394605200

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 38, 40, 41, 62, 76, 80, 82, 95, 124, 127, 152, 155, 164, 190, 205, 248, 254, 304, 310, 328, 380, 410, 496, 508, 589, 620, 635, 656, 760, 779, 820, 1016, 1178, 1240, 1270, 1271, 1520, 1558, 1640, 2032, 2356, 2413, 2480, 2540, 2542, 2945, 3116, 3280, 3895, 3937, 4712, 4826, 5080, 5084, 5207, 5890, 6232, 6355, 7790, 7874, 9424, 9652, 10160, 10168, 10414, 11780, 12065, 12464, 12710, 15580, 15748, 19304, 19685, 20336, 20828, 23560, 24130, 24149, 25420, 26035, 31160, 31496, 38608, 39370, 41656, 47120, 48260, 48298, 50840, 52070, 62320, 62992, 74803, 78740, 83312, 96520, 96596, 98933, 101680, 104140, 120745, 149606, 157480, 161417, 193040, 193192, 197866, 208280, 241490, 299212, 314960, 322834, 374015, 386384, 395732, 416560, 482980, 494665, 598424, 645668, 748030, 791464, 807085, 965960, 989330, 1196848, 1291336, 1496060, 1582928, 1614170, 1931920, 1978660, 2582672, 2992120, 3066923, 3228340, 3957320, 5984240, 6133846, 6456680, 7914640, 12267692, 12913360, 15334615, 24535384, 30669230, 49070768, 61338460, 122676920, 245353840]

約数ペア:

[(1, 245353840), (2, 122676920), (4, 61338460), (5, 49070768), (8, 30669230), (10, 24535384), (16, 15334615), (19, 12913360), (20, 12267692), (31, 7914640), (38, 6456680), (40, 6133846), (41, 5984240), (62, 3957320), (76, 3228340), (80, 3066923), (82, 2992120), (95, 2582672), (124, 1978660), (127, 1931920), (152, 1614170), (155, 1582928), (164, 1496060), (190, 1291336), (205, 1196848), (248, 989330), (254, 965960), (304, 807085), (310, 791464), (328, 748030), (380, 645668), (410, 598424), (496, 494665), (508, 482980), (589, 416560), (620, 395732), (635, 386384), (656, 374015), (760, 322834), (779, 314960), (820, 299212), (1016, 241490), (1178, 208280), (1240, 197866), (1270, 193192), (1271, 193040), (1520, 161417), (1558, 157480), (1640, 149606), (2032, 120745), (2356, 104140), (2413, 101680), (2480, 98933), (2540, 96596), (2542, 96520), (2945, 83312), (3116, 78740), (3280, 74803), (3895, 62992), (3937, 62320), (4712, 52070), (4826, 50840), (5080, 48298), (5084, 48260), (5207, 47120), (5890, 41656), (6232, 39370), (6355, 38608), (7790, 31496), (7874, 31160), (9424, 26035), (9652, 25420), (10160, 24149), (10168, 24130), (10414, 23560), (11780, 20828), (12065, 20336), (12464, 19685), (12710, 19304), (15580, 15748)]