405939100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{19997}}^1$

素因数の和:20047

約数の個数: 72

約数和(自身を含む): 1041495840

約数和(自身を除く): 635556740

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 29, 35, 50, 58, 70, 100, 116, 140, 145, 175, 203, 290, 350, 406, 580, 700, 725, 812, 1015, 1450, 2030, 2900, 4060, 5075, 10150, 19997, 20300, 39994, 79988, 99985, 139979, 199970, 279958, 399940, 499925, 559916, 579913, 699895, 999850, 1159826, 1399790, 1999700, 2319652, 2799580, 2899565, 3499475, 4059391, 5799130, 6998950, 8118782, 11598260, 13997900, 14497825, 16237564, 20296955, 28995650, 40593910, 57991300, 81187820, 101484775, 202969550, 405939100]

約数ペア:

[(1, 405939100), (2, 202969550), (4, 101484775), (5, 81187820), (7, 57991300), (10, 40593910), (14, 28995650), (20, 20296955), (25, 16237564), (28, 14497825), (29, 13997900), (35, 11598260), (50, 8118782), (58, 6998950), (70, 5799130), (100, 4059391), (116, 3499475), (140, 2899565), (145, 2799580), (175, 2319652), (203, 1999700), (290, 1399790), (350, 1159826), (406, 999850), (580, 699895), (700, 579913), (725, 559916), (812, 499925), (1015, 399940), (1450, 279958), (2030, 199970), (2900, 139979), (4060, 99985), (5075, 79988), (10150, 39994), (19997, 20300)]