21991704

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1657}}^1$

素因数の和:1752

約数の個数: 64

約数和(自身を含む): 63667200

約数和(自身を除く): 41675496

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 79, 84, 158, 168, 237, 316, 474, 553, 632, 948, 1106, 1657, 1659, 1896, 2212, 3314, 3318, 4424, 4971, 6628, 6636, 9942, 11599, 13256, 13272, 19884, 23198, 34797, 39768, 46396, 69594, 92792, 130903, 139188, 261806, 278376, 392709, 523612, 785418, 916321, 1047224, 1570836, 1832642, 2748963, 3141672, 3665284, 5497926, 7330568, 10995852, 21991704]

約数ペア:

[(1, 21991704), (2, 10995852), (3, 7330568), (4, 5497926), (6, 3665284), (7, 3141672), (8, 2748963), (12, 1832642), (14, 1570836), (21, 1047224), (24, 916321), (28, 785418), (42, 523612), (56, 392709), (79, 278376), (84, 261806), (158, 139188), (168, 130903), (237, 92792), (316, 69594), (474, 46396), (553, 39768), (632, 34797), (948, 23198), (1106, 19884), (1657, 13272), (1659, 13256), (1896, 11599), (2212, 9942), (3314, 6636), (3318, 6628), (4424, 4971)]