18942760

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{313}}^1$

素因数の和:430

約数の個数: 64

約数和(自身を含む): 45781200

約数和(自身を除く): 26838440

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 89, 136, 170, 178, 313, 340, 356, 445, 626, 680, 712, 890, 1252, 1513, 1565, 1780, 2504, 3026, 3130, 3560, 5321, 6052, 6260, 7565, 10642, 12104, 12520, 15130, 21284, 26605, 27857, 30260, 42568, 53210, 55714, 60520, 106420, 111428, 139285, 212840, 222856, 278570, 473569, 557140, 947138, 1114280, 1894276, 2367845, 3788552, 4735690, 9471380, 18942760]

約数ペア:

[(1, 18942760), (2, 9471380), (4, 4735690), (5, 3788552), (8, 2367845), (10, 1894276), (17, 1114280), (20, 947138), (34, 557140), (40, 473569), (68, 278570), (85, 222856), (89, 212840), (136, 139285), (170, 111428), (178, 106420), (313, 60520), (340, 55714), (356, 53210), (445, 42568), (626, 30260), (680, 27857), (712, 26605), (890, 21284), (1252, 15130), (1513, 12520), (1565, 12104), (1780, 10642), (2504, 7565), (3026, 6260), (3130, 6052), (3560, 5321)]