21049686

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{233}}^1\times {\mathrm{239}}^1$

素因数の和:490

約数の個数: 64

約数和(自身を含む): 53913600

約数和(自身を除く): 32863914

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 189, 233, 239, 378, 466, 478, 699, 717, 1398, 1434, 1631, 1673, 2097, 2151, 3262, 3346, 4194, 4302, 4893, 5019, 6291, 6453, 9786, 10038, 12582, 12906, 14679, 15057, 29358, 30114, 44037, 45171, 55687, 88074, 90342, 111374, 167061, 334122, 389809, 501183, 779618, 1002366, 1169427, 1503549, 2338854, 3007098, 3508281, 7016562, 10524843, 21049686]

約数ペア:

[(1, 21049686), (2, 10524843), (3, 7016562), (6, 3508281), (7, 3007098), (9, 2338854), (14, 1503549), (18, 1169427), (21, 1002366), (27, 779618), (42, 501183), (54, 389809), (63, 334122), (126, 167061), (189, 111374), (233, 90342), (239, 88074), (378, 55687), (466, 45171), (478, 44037), (699, 30114), (717, 29358), (1398, 15057), (1434, 14679), (1631, 12906), (1673, 12582), (2097, 10038), (2151, 9786), (3262, 6453), (3346, 6291), (4194, 5019), (4302, 4893)]