259372040

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:271

約数の個数: 128

約数和(自身を含む): 646272000

約数和(自身を除く): 386899960

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 31, 38, 40, 62, 76, 95, 101, 109, 124, 152, 155, 190, 202, 218, 248, 310, 380, 404, 436, 505, 545, 589, 620, 760, 808, 872, 1010, 1090, 1178, 1240, 1919, 2020, 2071, 2180, 2356, 2945, 3131, 3379, 3838, 4040, 4142, 4360, 4712, 5890, 6262, 6758, 7676, 8284, 9595, 10355, 11009, 11780, 12524, 13516, 15352, 15655, 16568, 16895, 19190, 20710, 22018, 23560, 25048, 27032, 31310, 33790, 38380, 41420, 44036, 55045, 59489, 62620, 64201, 67580, 76760, 82840, 88072, 110090, 118978, 125240, 128402, 135160, 209171, 220180, 237956, 256804, 297445, 321005, 341279, 418342, 440360, 475912, 513608, 594890, 642010, 682558, 836684, 1045855, 1189780, 1284020, 1365116, 1673368, 1706395, 2091710, 2379560, 2568040, 2730232, 3412790, 4183420, 6484301, 6825580, 8366840, 12968602, 13651160, 25937204, 32421505, 51874408, 64843010, 129686020, 259372040]

約数ペア:

[(1, 259372040), (2, 129686020), (4, 64843010), (5, 51874408), (8, 32421505), (10, 25937204), (19, 13651160), (20, 12968602), (31, 8366840), (38, 6825580), (40, 6484301), (62, 4183420), (76, 3412790), (95, 2730232), (101, 2568040), (109, 2379560), (124, 2091710), (152, 1706395), (155, 1673368), (190, 1365116), (202, 1284020), (218, 1189780), (248, 1045855), (310, 836684), (380, 682558), (404, 642010), (436, 594890), (505, 513608), (545, 475912), (589, 440360), (620, 418342), (760, 341279), (808, 321005), (872, 297445), (1010, 256804), (1090, 237956), (1178, 220180), (1240, 209171), (1919, 135160), (2020, 128402), (2071, 125240), (2180, 118978), (2356, 110090), (2945, 88072), (3131, 82840), (3379, 76760), (3838, 67580), (4040, 64201), (4142, 62620), (4360, 59489), (4712, 55045), (5890, 44036), (6262, 41420), (6758, 38380), (7676, 33790), (8284, 31310), (9595, 27032), (10355, 25048), (11009, 23560), (11780, 22018), (12524, 20710), (13516, 19190), (15352, 16895), (15655, 16568)]