31206868

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{151}}^1$

素因数の和:245

約数の個数: 72

約数和(自身を含む): 70189952

約数和(自身を除く): 38983084

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 61, 77, 121, 122, 151, 154, 242, 244, 302, 308, 427, 484, 604, 671, 847, 854, 1057, 1342, 1661, 1694, 1708, 2114, 2684, 3322, 3388, 4228, 4697, 6644, 7381, 9211, 9394, 11627, 14762, 18271, 18422, 18788, 23254, 29524, 36542, 36844, 46508, 51667, 64477, 73084, 101321, 103334, 127897, 128954, 202642, 206668, 255794, 257908, 405284, 511588, 709247, 1114531, 1418494, 2229062, 2836988, 4458124, 7801717, 15603434, 31206868]

約数ペア:

[(1, 31206868), (2, 15603434), (4, 7801717), (7, 4458124), (11, 2836988), (14, 2229062), (22, 1418494), (28, 1114531), (44, 709247), (61, 511588), (77, 405284), (121, 257908), (122, 255794), (151, 206668), (154, 202642), (242, 128954), (244, 127897), (302, 103334), (308, 101321), (427, 73084), (484, 64477), (604, 51667), (671, 46508), (847, 36844), (854, 36542), (1057, 29524), (1342, 23254), (1661, 18788), (1694, 18422), (1708, 18271), (2114, 14762), (2684, 11627), (3322, 9394), (3388, 9211), (4228, 7381), (4697, 6644)]