18892940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{211}}^1$

素因数の和:279

約数の個数: 72

約数和(自身を含む): 45000816

約数和(自身を除く): 26107876

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 121, 148, 185, 211, 220, 242, 370, 407, 422, 484, 605, 740, 814, 844, 1055, 1210, 1628, 2035, 2110, 2321, 2420, 4070, 4220, 4477, 4642, 7807, 8140, 8954, 9284, 11605, 15614, 17908, 22385, 23210, 25531, 31228, 39035, 44770, 46420, 51062, 78070, 85877, 89540, 102124, 127655, 156140, 171754, 255310, 343508, 429385, 510620, 858770, 944647, 1717540, 1889294, 3778588, 4723235, 9446470, 18892940]

約数ペア:

[(1, 18892940), (2, 9446470), (4, 4723235), (5, 3778588), (10, 1889294), (11, 1717540), (20, 944647), (22, 858770), (37, 510620), (44, 429385), (55, 343508), (74, 255310), (110, 171754), (121, 156140), (148, 127655), (185, 102124), (211, 89540), (220, 85877), (242, 78070), (370, 51062), (407, 46420), (422, 44770), (484, 39035), (605, 31228), (740, 25531), (814, 23210), (844, 22385), (1055, 17908), (1210, 15614), (1628, 11605), (2035, 9284), (2110, 8954), (2321, 8140), (2420, 7807), (4070, 4642), (4220, 4477)]