20631910

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{8353}}^1$

素因数の和:8392

約数の個数: 32

約数和(自身を含む): 42104160

約数和(自身を除く): 21472250

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 494, 1235, 2470, 8353, 16706, 41765, 83530, 108589, 158707, 217178, 317414, 542945, 793535, 1085890, 1587070, 2063191, 4126382, 10315955, 20631910]

約数ペア:

[(1, 20631910), (2, 10315955), (5, 4126382), (10, 2063191), (13, 1587070), (19, 1085890), (26, 793535), (38, 542945), (65, 317414), (95, 217178), (130, 158707), (190, 108589), (247, 83530), (494, 41765), (1235, 16706), (2470, 8353)]