12901240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{269}}^1$

素因数の和:400

約数の個数: 64

約数和(自身を含む): 32076000

約数和(自身を除く): 19174760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 109, 110, 218, 220, 269, 436, 440, 538, 545, 872, 1076, 1090, 1199, 1345, 2152, 2180, 2398, 2690, 2959, 4360, 4796, 5380, 5918, 5995, 9592, 10760, 11836, 11990, 14795, 23672, 23980, 29321, 29590, 47960, 58642, 59180, 117284, 118360, 146605, 234568, 293210, 322531, 586420, 645062, 1172840, 1290124, 1612655, 2580248, 3225310, 6450620, 12901240]

約数ペア:

[(1, 12901240), (2, 6450620), (4, 3225310), (5, 2580248), (8, 1612655), (10, 1290124), (11, 1172840), (20, 645062), (22, 586420), (40, 322531), (44, 293210), (55, 234568), (88, 146605), (109, 118360), (110, 117284), (218, 59180), (220, 58642), (269, 47960), (436, 29590), (440, 29321), (538, 23980), (545, 23672), (872, 14795), (1076, 11990), (1090, 11836), (1199, 10760), (1345, 9592), (2152, 5995), (2180, 5918), (2398, 5380), (2690, 4796), (2959, 4360)]