20648220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:251

約数の個数: 96

約数和(自身を含む): 60673536

約数和(自身を除く): 40025316

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 37, 60, 71, 74, 111, 131, 142, 148, 185, 213, 222, 262, 284, 355, 370, 393, 426, 444, 524, 555, 655, 710, 740, 786, 852, 1065, 1110, 1310, 1420, 1572, 1965, 2130, 2220, 2620, 2627, 3930, 4260, 4847, 5254, 7860, 7881, 9301, 9694, 10508, 13135, 14541, 15762, 18602, 19388, 24235, 26270, 27903, 29082, 31524, 37204, 39405, 46505, 48470, 52540, 55806, 58164, 72705, 78810, 93010, 96940, 111612, 139515, 145410, 157620, 186020, 279030, 290820, 344137, 558060, 688274, 1032411, 1376548, 1720685, 2064822, 3441370, 4129644, 5162055, 6882740, 10324110, 20648220]

約数ペア:

[(1, 20648220), (2, 10324110), (3, 6882740), (4, 5162055), (5, 4129644), (6, 3441370), (10, 2064822), (12, 1720685), (15, 1376548), (20, 1032411), (30, 688274), (37, 558060), (60, 344137), (71, 290820), (74, 279030), (111, 186020), (131, 157620), (142, 145410), (148, 139515), (185, 111612), (213, 96940), (222, 93010), (262, 78810), (284, 72705), (355, 58164), (370, 55806), (393, 52540), (426, 48470), (444, 46505), (524, 39405), (555, 37204), (655, 31524), (710, 29082), (740, 27903), (786, 26270), (852, 24235), (1065, 19388), (1110, 18602), (1310, 15762), (1420, 14541), (1572, 13135), (1965, 10508), (2130, 9694), (2220, 9301), (2620, 7881), (2627, 7860), (3930, 5254), (4260, 4847)]