21581566180

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1\times {\mathrm{75571}}^1$

素因数の和:75820

約数の個数: 48

約数和(自身を含む): 46086828480

約数和(自身を除く): 24505262300

約数列:

[1, 2, 4, 5, 10, 20, 109, 131, 218, 262, 436, 524, 545, 655, 1090, 1310, 2180, 2620, 14279, 28558, 57116, 71395, 75571, 142790, 151142, 285580, 302284, 377855, 755710, 1511420, 8237239, 9899801, 16474478, 19799602, 32948956, 39599204, 41186195, 49499005, 82372390, 98998010, 164744780, 197996020, 1079078309, 2158156618, 4316313236, 5395391545, 10790783090, 21581566180]

約数ペア:

[(1, 21581566180), (2, 10790783090), (4, 5395391545), (5, 4316313236), (10, 2158156618), (20, 1079078309), (109, 197996020), (131, 164744780), (218, 98998010), (262, 82372390), (436, 49499005), (524, 41186195), (545, 39599204), (655, 32948956), (1090, 19799602), (1310, 16474478), (2180, 9899801), (2620, 8237239), (14279, 1511420), (28558, 755710), (57116, 377855), (71395, 302284), (75571, 285580), (142790, 151142)]