20784764

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{179}}^1$

素因数の和:243

約数の個数: 96

約数和(自身を含む): 50803200

約数和(自身を除く): 30018436

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 29, 44, 52, 58, 77, 91, 116, 143, 154, 179, 182, 203, 286, 308, 319, 358, 364, 377, 406, 572, 638, 716, 754, 812, 1001, 1253, 1276, 1508, 1969, 2002, 2233, 2327, 2506, 2639, 3938, 4004, 4147, 4466, 4654, 5012, 5191, 5278, 7876, 8294, 8932, 9308, 10382, 10556, 13783, 16289, 16588, 20764, 25597, 27566, 29029, 32578, 36337, 51194, 55132, 57101, 58058, 65156, 67483, 72674, 102388, 114202, 116116, 134966, 145348, 179179, 228404, 269932, 358358, 399707, 472381, 716716, 742313, 799414, 944762, 1484626, 1598828, 1889524, 2969252, 5196191, 10392382, 20784764]

約数ペア:

[(1, 20784764), (2, 10392382), (4, 5196191), (7, 2969252), (11, 1889524), (13, 1598828), (14, 1484626), (22, 944762), (26, 799414), (28, 742313), (29, 716716), (44, 472381), (52, 399707), (58, 358358), (77, 269932), (91, 228404), (116, 179179), (143, 145348), (154, 134966), (179, 116116), (182, 114202), (203, 102388), (286, 72674), (308, 67483), (319, 65156), (358, 58058), (364, 57101), (377, 55132), (406, 51194), (572, 36337), (638, 32578), (716, 29029), (754, 27566), (812, 25597), (1001, 20764), (1253, 16588), (1276, 16289), (1508, 13783), (1969, 10556), (2002, 10382), (2233, 9308), (2327, 8932), (2506, 8294), (2639, 7876), (3938, 5278), (4004, 5191), (4147, 5012), (4466, 4654)]