20847420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10529}}^1$

素因数の和:10555

約数の個数: 72

約数和(自身を含む): 68992560

約数和(自身を除く): 48145140

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 10529, 21058, 31587, 42116, 52645, 63174, 94761, 105290, 115819, 126348, 157935, 189522, 210580, 231638, 315870, 347457, 379044, 463276, 473805, 579095, 631740, 694914, 947610, 1042371, 1158190, 1389828, 1737285, 1895220, 2084742, 2316380, 3474570, 4169484, 5211855, 6949140, 10423710, 20847420]

約数ペア:

[(1, 20847420), (2, 10423710), (3, 6949140), (4, 5211855), (5, 4169484), (6, 3474570), (9, 2316380), (10, 2084742), (11, 1895220), (12, 1737285), (15, 1389828), (18, 1158190), (20, 1042371), (22, 947610), (30, 694914), (33, 631740), (36, 579095), (44, 473805), (45, 463276), (55, 379044), (60, 347457), (66, 315870), (90, 231638), (99, 210580), (110, 189522), (132, 157935), (165, 126348), (180, 115819), (198, 105290), (220, 94761), (330, 63174), (396, 52645), (495, 42116), (660, 31587), (990, 21058), (1980, 10529)]