261243640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{12781}}^1$

素因数の和:12872

約数の個数: 64

約数和(自身を含む): 681024960

約数和(自身を除く): 419781320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 73, 140, 146, 280, 292, 365, 511, 584, 730, 1022, 1460, 2044, 2555, 2920, 4088, 5110, 10220, 12781, 20440, 25562, 51124, 63905, 89467, 102248, 127810, 178934, 255620, 357868, 447335, 511240, 715736, 894670, 933013, 1789340, 1866026, 3578680, 3732052, 4665065, 6531091, 7464104, 9330130, 13062182, 18660260, 26124364, 32655455, 37320520, 52248728, 65310910, 130621820, 261243640]

約数ペア:

[(1, 261243640), (2, 130621820), (4, 65310910), (5, 52248728), (7, 37320520), (8, 32655455), (10, 26124364), (14, 18660260), (20, 13062182), (28, 9330130), (35, 7464104), (40, 6531091), (56, 4665065), (70, 3732052), (73, 3578680), (140, 1866026), (146, 1789340), (280, 933013), (292, 894670), (365, 715736), (511, 511240), (584, 447335), (730, 357868), (1022, 255620), (1460, 178934), (2044, 127810), (2555, 102248), (2920, 89467), (4088, 63905), (5110, 51124), (10220, 25562), (12781, 20440)]