20315960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^2\times {\mathrm{53}}^1$

素因数の和:145

約数の個数: 96

約数和(自身を含む): 54704160

約数和(自身を除く): 34388200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 53, 56, 70, 74, 106, 140, 148, 185, 212, 259, 265, 280, 296, 370, 371, 424, 518, 530, 740, 742, 1036, 1060, 1295, 1369, 1480, 1484, 1855, 1961, 2072, 2120, 2590, 2738, 2968, 3710, 3922, 5180, 5476, 6845, 7420, 7844, 9583, 9805, 10360, 10952, 13690, 13727, 14840, 15688, 19166, 19610, 27380, 27454, 38332, 39220, 47915, 54760, 54908, 68635, 72557, 76664, 78440, 95830, 109816, 137270, 145114, 191660, 274540, 290228, 362785, 383320, 507899, 549080, 580456, 725570, 1015798, 1451140, 2031596, 2539495, 2902280, 4063192, 5078990, 10157980, 20315960]

約数ペア:

[(1, 20315960), (2, 10157980), (4, 5078990), (5, 4063192), (7, 2902280), (8, 2539495), (10, 2031596), (14, 1451140), (20, 1015798), (28, 725570), (35, 580456), (37, 549080), (40, 507899), (53, 383320), (56, 362785), (70, 290228), (74, 274540), (106, 191660), (140, 145114), (148, 137270), (185, 109816), (212, 95830), (259, 78440), (265, 76664), (280, 72557), (296, 68635), (370, 54908), (371, 54760), (424, 47915), (518, 39220), (530, 38332), (740, 27454), (742, 27380), (1036, 19610), (1060, 19166), (1295, 15688), (1369, 14840), (1480, 13727), (1484, 13690), (1855, 10952), (1961, 10360), (2072, 9805), (2120, 9583), (2590, 7844), (2738, 7420), (2968, 6845), (3710, 5476), (3922, 5180)]