381278020

素因数分解:

$2^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{191}}^1\times {\mathrm{661}}^1$

素因数の和:1012

約数の個数: 48

約数和(自身を含む): 811431936

約数和(自身を除く): 430153916

約数列:

[1, 2, 4, 5, 10, 20, 151, 191, 302, 382, 604, 661, 755, 764, 955, 1322, 1510, 1910, 2644, 3020, 3305, 3820, 6610, 13220, 28841, 57682, 99811, 115364, 126251, 144205, 199622, 252502, 288410, 399244, 499055, 505004, 576820, 631255, 998110, 1262510, 1996220, 2525020, 19063901, 38127802, 76255604, 95319505, 190639010, 381278020]

約数ペア:

[(1, 381278020), (2, 190639010), (4, 95319505), (5, 76255604), (10, 38127802), (20, 19063901), (151, 2525020), (191, 1996220), (302, 1262510), (382, 998110), (604, 631255), (661, 576820), (755, 505004), (764, 499055), (955, 399244), (1322, 288410), (1510, 252502), (1910, 199622), (2644, 144205), (3020, 126251), (3305, 115364), (3820, 99811), (6610, 57682), (13220, 28841)]