18154840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^4\times {\mathrm{31}}^1$

素因数の和:86

約数の個数: 80

約数和(自身を含む): 46382400

約数和(自身を除く): 28227560

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 121, 124, 155, 220, 242, 248, 310, 341, 440, 484, 605, 620, 682, 968, 1210, 1240, 1331, 1364, 1705, 2420, 2662, 2728, 3410, 3751, 4840, 5324, 6655, 6820, 7502, 10648, 13310, 13640, 14641, 15004, 18755, 26620, 29282, 30008, 37510, 41261, 53240, 58564, 73205, 75020, 82522, 117128, 146410, 150040, 165044, 206305, 292820, 330088, 412610, 453871, 585640, 825220, 907742, 1650440, 1815484, 2269355, 3630968, 4538710, 9077420, 18154840]

約数ペア:

[(1, 18154840), (2, 9077420), (4, 4538710), (5, 3630968), (8, 2269355), (10, 1815484), (11, 1650440), (20, 907742), (22, 825220), (31, 585640), (40, 453871), (44, 412610), (55, 330088), (62, 292820), (88, 206305), (110, 165044), (121, 150040), (124, 146410), (155, 117128), (220, 82522), (242, 75020), (248, 73205), (310, 58564), (341, 53240), (440, 41261), (484, 37510), (605, 30008), (620, 29282), (682, 26620), (968, 18755), (1210, 15004), (1240, 14641), (1331, 13640), (1364, 13310), (1705, 10648), (2420, 7502), (2662, 6820), (2728, 6655), (3410, 5324), (3751, 4840)]