20699490

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{409}}^1$

素因数の和:667

約数の個数: 64

約数和(自身を含む): 57150720

約数和(自身を除く): 36451230

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 241, 409, 482, 723, 818, 1205, 1227, 1446, 1687, 2045, 2410, 2454, 2863, 3374, 3615, 4090, 5061, 5726, 6135, 7230, 8435, 8589, 10122, 12270, 14315, 16870, 17178, 25305, 28630, 42945, 50610, 85890, 98569, 197138, 295707, 492845, 591414, 689983, 985690, 1379966, 1478535, 2069949, 2957070, 3449915, 4139898, 6899830, 10349745, 20699490]

約数ペア:

[(1, 20699490), (2, 10349745), (3, 6899830), (5, 4139898), (6, 3449915), (7, 2957070), (10, 2069949), (14, 1478535), (15, 1379966), (21, 985690), (30, 689983), (35, 591414), (42, 492845), (70, 295707), (105, 197138), (210, 98569), (241, 85890), (409, 50610), (482, 42945), (723, 28630), (818, 25305), (1205, 17178), (1227, 16870), (1446, 14315), (1687, 12270), (2045, 10122), (2410, 8589), (2454, 8435), (2863, 7230), (3374, 6135), (3615, 5726), (4090, 5061)]