420013840

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{128053}}^1$

素因数の和:128107

約数の個数: 40

約数和(自身を含む): 1000357848

約数和(自身を除く): 580344008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 128053, 256106, 512212, 640265, 1024424, 1280530, 2048848, 2561060, 5122120, 5250173, 10244240, 10500346, 21000692, 26250865, 42001384, 52501730, 84002768, 105003460, 210006920, 420013840]

約数ペア:

[(1, 420013840), (2, 210006920), (4, 105003460), (5, 84002768), (8, 52501730), (10, 42001384), (16, 26250865), (20, 21000692), (40, 10500346), (41, 10244240), (80, 5250173), (82, 5122120), (164, 2561060), (205, 2048848), (328, 1280530), (410, 1024424), (656, 640265), (820, 512212), (1640, 256106), (3280, 128053)]