20444128

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{557}}^1$

素因数の和:635

約数の個数: 48

約数和(自身を含む): 42747264

約数和(自身を除く): 22303136

約数列:

[1, 2, 4, 8, 16, 31, 32, 37, 62, 74, 124, 148, 248, 296, 496, 557, 592, 992, 1114, 1147, 1184, 2228, 2294, 4456, 4588, 8912, 9176, 17267, 17824, 18352, 20609, 34534, 36704, 41218, 69068, 82436, 138136, 164872, 276272, 329744, 552544, 638879, 659488, 1277758, 2555516, 5111032, 10222064, 20444128]

約数ペア:

[(1, 20444128), (2, 10222064), (4, 5111032), (8, 2555516), (16, 1277758), (31, 659488), (32, 638879), (37, 552544), (62, 329744), (74, 276272), (124, 164872), (148, 138136), (248, 82436), (296, 69068), (496, 41218), (557, 36704), (592, 34534), (992, 20609), (1114, 18352), (1147, 17824), (1184, 17267), (2228, 9176), (2294, 8912), (4456, 4588)]