20512187780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{56767}}^1$

素因数の和:56901

約数の個数: 96

約数和(自身を含む): 51499929600

約数和(自身を除く): 30987741820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 89, 116, 140, 145, 178, 203, 290, 356, 406, 445, 580, 623, 812, 890, 1015, 1246, 1780, 2030, 2492, 2581, 3115, 4060, 5162, 6230, 10324, 12460, 12905, 18067, 25810, 36134, 51620, 56767, 72268, 90335, 113534, 180670, 227068, 283835, 361340, 397369, 567670, 794738, 1135340, 1589476, 1646243, 1986845, 3292486, 3973690, 5052263, 6584972, 7947380, 8231215, 10104526, 11523701, 16462430, 20209052, 23047402, 25261315, 32924860, 35365841, 46094804, 50522630, 57618505, 70731682, 101045260, 115237010, 141463364, 146515627, 176829205, 230474020, 293031254, 353658410, 586062508, 707316820, 732578135, 1025609389, 1465156270, 2051218778, 2930312540, 4102437556, 5128046945, 10256093890, 20512187780]

約数ペア:

[(1, 20512187780), (2, 10256093890), (4, 5128046945), (5, 4102437556), (7, 2930312540), (10, 2051218778), (14, 1465156270), (20, 1025609389), (28, 732578135), (29, 707316820), (35, 586062508), (58, 353658410), (70, 293031254), (89, 230474020), (116, 176829205), (140, 146515627), (145, 141463364), (178, 115237010), (203, 101045260), (290, 70731682), (356, 57618505), (406, 50522630), (445, 46094804), (580, 35365841), (623, 32924860), (812, 25261315), (890, 23047402), (1015, 20209052), (1246, 16462430), (1780, 11523701), (2030, 10104526), (2492, 8231215), (2581, 7947380), (3115, 6584972), (4060, 5052263), (5162, 3973690), (6230, 3292486), (10324, 1986845), (12460, 1646243), (12905, 1589476), (18067, 1135340), (25810, 794738), (36134, 567670), (51620, 397369), (56767, 361340), (72268, 283835), (90335, 227068), (113534, 180670)]