21391188

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1031}}^1$

素因数の和:1077

約数の個数: 96

約数和(自身を含む): 64727040

約数和(自身を除く): 43335852

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 19, 21, 26, 28, 38, 39, 42, 52, 57, 76, 78, 84, 91, 114, 133, 156, 182, 228, 247, 266, 273, 364, 399, 494, 532, 546, 741, 798, 988, 1031, 1092, 1482, 1596, 1729, 2062, 2964, 3093, 3458, 4124, 5187, 6186, 6916, 7217, 10374, 12372, 13403, 14434, 19589, 20748, 21651, 26806, 28868, 39178, 40209, 43302, 53612, 58767, 78356, 80418, 86604, 93821, 117534, 137123, 160836, 187642, 235068, 254657, 274246, 281463, 375284, 411369, 509314, 548492, 562926, 763971, 822738, 1018628, 1125852, 1527942, 1645476, 1782599, 3055884, 3565198, 5347797, 7130396, 10695594, 21391188]

約数ペア:

[(1, 21391188), (2, 10695594), (3, 7130396), (4, 5347797), (6, 3565198), (7, 3055884), (12, 1782599), (13, 1645476), (14, 1527942), (19, 1125852), (21, 1018628), (26, 822738), (28, 763971), (38, 562926), (39, 548492), (42, 509314), (52, 411369), (57, 375284), (76, 281463), (78, 274246), (84, 254657), (91, 235068), (114, 187642), (133, 160836), (156, 137123), (182, 117534), (228, 93821), (247, 86604), (266, 80418), (273, 78356), (364, 58767), (399, 53612), (494, 43302), (532, 40209), (546, 39178), (741, 28868), (798, 26806), (988, 21651), (1031, 20748), (1092, 19589), (1482, 14434), (1596, 13403), (1729, 12372), (2062, 10374), (2964, 7217), (3093, 6916), (3458, 6186), (4124, 5187)]