290419120

素因数分解:

$2^4\times 5^1\times {\mathrm{281}}^1\times {\mathrm{12919}}^1$

素因数の和:13213

約数の個数: 40

約数和(自身を含む): 677679840

約数和(自身を除く): 387260720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 281, 562, 1124, 1405, 2248, 2810, 4496, 5620, 11240, 12919, 22480, 25838, 51676, 64595, 103352, 129190, 206704, 258380, 516760, 1033520, 3630239, 7260478, 14520956, 18151195, 29041912, 36302390, 58083824, 72604780, 145209560, 290419120]

約数ペア:

[(1, 290419120), (2, 145209560), (4, 72604780), (5, 58083824), (8, 36302390), (10, 29041912), (16, 18151195), (20, 14520956), (40, 7260478), (80, 3630239), (281, 1033520), (562, 516760), (1124, 258380), (1405, 206704), (2248, 129190), (2810, 103352), (4496, 64595), (5620, 51676), (11240, 25838), (12919, 22480)]