321123790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{12539}}^1$

素因数の和:12756

約数の個数: 32

約数和(自身を含む): 625695840

約数和(自身を除く): 304572050

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 197, 394, 985, 1970, 2561, 5122, 12539, 12805, 25078, 25610, 62695, 125390, 163007, 326014, 815035, 1630070, 2470183, 4940366, 12350915, 24701830, 32112379, 64224758, 160561895, 321123790]

約数ペア:

[(1, 321123790), (2, 160561895), (5, 64224758), (10, 32112379), (13, 24701830), (26, 12350915), (65, 4940366), (130, 2470183), (197, 1630070), (394, 815035), (985, 326014), (1970, 163007), (2561, 125390), (5122, 62695), (12539, 25610), (12805, 25078)]