129109420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{1721}}^1$

素因数の和:1783

約数の個数: 72

約数和(自身を含む): 307810944

約数和(自身を除く): 178701524

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 121, 124, 155, 220, 242, 310, 341, 484, 605, 620, 682, 1210, 1364, 1705, 1721, 2420, 3410, 3442, 3751, 6820, 6884, 7502, 8605, 15004, 17210, 18755, 18931, 34420, 37510, 37862, 53351, 75020, 75724, 94655, 106702, 189310, 208241, 213404, 266755, 378620, 416482, 533510, 586861, 832964, 1041205, 1067020, 1173722, 2082410, 2347444, 2934305, 4164820, 5868610, 6455471, 11737220, 12910942, 25821884, 32277355, 64554710, 129109420]

約数ペア:

[(1, 129109420), (2, 64554710), (4, 32277355), (5, 25821884), (10, 12910942), (11, 11737220), (20, 6455471), (22, 5868610), (31, 4164820), (44, 2934305), (55, 2347444), (62, 2082410), (110, 1173722), (121, 1067020), (124, 1041205), (155, 832964), (220, 586861), (242, 533510), (310, 416482), (341, 378620), (484, 266755), (605, 213404), (620, 208241), (682, 189310), (1210, 106702), (1364, 94655), (1705, 75724), (1721, 75020), (2420, 53351), (3410, 37862), (3442, 37510), (3751, 34420), (6820, 18931), (6884, 18755), (7502, 17210), (8605, 15004)]