20965854

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:134

約数の個数: 128

約数和(自身を含む): 56770560

約数和(自身を除く): 35804706

約数列:

[1, 2, 3, 6, 7, 13, 14, 19, 21, 26, 38, 39, 42, 43, 47, 57, 78, 86, 91, 94, 114, 129, 133, 141, 182, 247, 258, 266, 273, 282, 301, 329, 399, 494, 546, 559, 602, 611, 658, 741, 798, 817, 893, 903, 987, 1118, 1222, 1482, 1634, 1677, 1729, 1786, 1806, 1833, 1974, 2021, 2451, 2679, 3354, 3458, 3666, 3913, 4042, 4277, 4902, 5187, 5358, 5719, 6063, 6251, 7826, 8554, 10374, 10621, 11438, 11609, 11739, 12126, 12502, 12831, 14147, 17157, 18753, 21242, 23218, 23478, 25662, 26273, 28294, 31863, 34314, 34827, 37506, 38399, 42441, 52546, 63726, 69654, 74347, 76798, 78819, 81263, 84882, 115197, 148694, 157638, 162526, 183911, 223041, 230394, 243789, 268793, 367822, 446082, 487578, 499187, 537586, 551733, 806379, 998374, 1103466, 1497561, 1612758, 2995122, 3494309, 6988618, 10482927, 20965854]

約数ペア:

[(1, 20965854), (2, 10482927), (3, 6988618), (6, 3494309), (7, 2995122), (13, 1612758), (14, 1497561), (19, 1103466), (21, 998374), (26, 806379), (38, 551733), (39, 537586), (42, 499187), (43, 487578), (47, 446082), (57, 367822), (78, 268793), (86, 243789), (91, 230394), (94, 223041), (114, 183911), (129, 162526), (133, 157638), (141, 148694), (182, 115197), (247, 84882), (258, 81263), (266, 78819), (273, 76798), (282, 74347), (301, 69654), (329, 63726), (399, 52546), (494, 42441), (546, 38399), (559, 37506), (602, 34827), (611, 34314), (658, 31863), (741, 28294), (798, 26273), (817, 25662), (893, 23478), (903, 23218), (987, 21242), (1118, 18753), (1222, 17157), (1482, 14147), (1634, 12831), (1677, 12502), (1729, 12126), (1786, 11739), (1806, 11609), (1833, 11438), (1974, 10621), (2021, 10374), (2451, 8554), (2679, 7826), (3354, 6251), (3458, 6063), (3666, 5719), (3913, 5358), (4042, 5187), (4277, 4902)]