20827560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^3\times {\mathrm{79}}^1$

素因数の和:132

約数の個数: 128

約数和(自身を含む): 68544000

約数和(自身を除く): 47716440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 79, 104, 120, 130, 156, 158, 169, 195, 237, 260, 312, 316, 338, 390, 395, 474, 507, 520, 632, 676, 780, 790, 845, 948, 1014, 1027, 1185, 1352, 1560, 1580, 1690, 1896, 2028, 2054, 2197, 2370, 2535, 3081, 3160, 3380, 4056, 4108, 4394, 4740, 5070, 5135, 6162, 6591, 6760, 8216, 8788, 9480, 10140, 10270, 10985, 12324, 13182, 13351, 15405, 17576, 20280, 20540, 21970, 24648, 26364, 26702, 30810, 32955, 40053, 41080, 43940, 52728, 53404, 61620, 65910, 66755, 80106, 87880, 106808, 123240, 131820, 133510, 160212, 173563, 200265, 263640, 267020, 320424, 347126, 400530, 520689, 534040, 694252, 801060, 867815, 1041378, 1388504, 1602120, 1735630, 2082756, 2603445, 3471260, 4165512, 5206890, 6942520, 10413780, 20827560]

約数ペア:

[(1, 20827560), (2, 10413780), (3, 6942520), (4, 5206890), (5, 4165512), (6, 3471260), (8, 2603445), (10, 2082756), (12, 1735630), (13, 1602120), (15, 1388504), (20, 1041378), (24, 867815), (26, 801060), (30, 694252), (39, 534040), (40, 520689), (52, 400530), (60, 347126), (65, 320424), (78, 267020), (79, 263640), (104, 200265), (120, 173563), (130, 160212), (156, 133510), (158, 131820), (169, 123240), (195, 106808), (237, 87880), (260, 80106), (312, 66755), (316, 65910), (338, 61620), (390, 53404), (395, 52728), (474, 43940), (507, 41080), (520, 40053), (632, 32955), (676, 30810), (780, 26702), (790, 26364), (845, 24648), (948, 21970), (1014, 20540), (1027, 20280), (1185, 17576), (1352, 15405), (1560, 13351), (1580, 13182), (1690, 12324), (1896, 10985), (2028, 10270), (2054, 10140), (2197, 9480), (2370, 8788), (2535, 8216), (3081, 6760), (3160, 6591), (3380, 6162), (4056, 5135), (4108, 5070), (4394, 4740)]