20021660

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{751}}^1$

素因数の和:834

約数の個数: 48

約数和(自身を含む): 44470272

約数和(自身を除く): 24448612

約数列:

[1, 2, 4, 5, 10, 20, 31, 43, 62, 86, 124, 155, 172, 215, 310, 430, 620, 751, 860, 1333, 1502, 2666, 3004, 3755, 5332, 6665, 7510, 13330, 15020, 23281, 26660, 32293, 46562, 64586, 93124, 116405, 129172, 161465, 232810, 322930, 465620, 645860, 1001083, 2002166, 4004332, 5005415, 10010830, 20021660]

約数ペア:

[(1, 20021660), (2, 10010830), (4, 5005415), (5, 4004332), (10, 2002166), (20, 1001083), (31, 645860), (43, 465620), (62, 322930), (86, 232810), (124, 161465), (155, 129172), (172, 116405), (215, 93124), (310, 64586), (430, 46562), (620, 32293), (751, 26660), (860, 23281), (1333, 15020), (1502, 13330), (2666, 7510), (3004, 6665), (3755, 5332)]