20987416

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{1483}}^1$

素因数の和:1579

約数の個数: 32

約数和(自身を含む): 41403600

約数和(自身を除く): 20416184

約数列:

[1, 2, 4, 8, 29, 58, 61, 116, 122, 232, 244, 488, 1483, 1769, 2966, 3538, 5932, 7076, 11864, 14152, 43007, 86014, 90463, 172028, 180926, 344056, 361852, 723704, 2623427, 5246854, 10493708, 20987416]

約数ペア:

[(1, 20987416), (2, 10493708), (4, 5246854), (8, 2623427), (29, 723704), (58, 361852), (61, 344056), (116, 180926), (122, 172028), (232, 90463), (244, 86014), (488, 43007), (1483, 14152), (1769, 11864), (2966, 7076), (3538, 5932)]