21904680

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{293}}^1$

素因数の和:403

約数の個数: 128

約数和(自身を含む): 76204800

約数和(自身を除く): 54300120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 89, 105, 120, 140, 168, 178, 210, 267, 280, 293, 356, 420, 445, 534, 586, 623, 712, 840, 879, 890, 1068, 1172, 1246, 1335, 1465, 1758, 1780, 1869, 2051, 2136, 2344, 2492, 2670, 2930, 3115, 3516, 3560, 3738, 4102, 4395, 4984, 5340, 5860, 6153, 6230, 7032, 7476, 8204, 8790, 9345, 10255, 10680, 11720, 12306, 12460, 14952, 16408, 17580, 18690, 20510, 24612, 24920, 26077, 30765, 35160, 37380, 41020, 49224, 52154, 61530, 74760, 78231, 82040, 104308, 123060, 130385, 156462, 182539, 208616, 246120, 260770, 312924, 365078, 391155, 521540, 547617, 625848, 730156, 782310, 912695, 1043080, 1095234, 1460312, 1564620, 1825390, 2190468, 2738085, 3129240, 3650780, 4380936, 5476170, 7301560, 10952340, 21904680]

約数ペア:

[(1, 21904680), (2, 10952340), (3, 7301560), (4, 5476170), (5, 4380936), (6, 3650780), (7, 3129240), (8, 2738085), (10, 2190468), (12, 1825390), (14, 1564620), (15, 1460312), (20, 1095234), (21, 1043080), (24, 912695), (28, 782310), (30, 730156), (35, 625848), (40, 547617), (42, 521540), (56, 391155), (60, 365078), (70, 312924), (84, 260770), (89, 246120), (105, 208616), (120, 182539), (140, 156462), (168, 130385), (178, 123060), (210, 104308), (267, 82040), (280, 78231), (293, 74760), (356, 61530), (420, 52154), (445, 49224), (534, 41020), (586, 37380), (623, 35160), (712, 30765), (840, 26077), (879, 24920), (890, 24612), (1068, 20510), (1172, 18690), (1246, 17580), (1335, 16408), (1465, 14952), (1758, 12460), (1780, 12306), (1869, 11720), (2051, 10680), (2136, 10255), (2344, 9345), (2492, 8790), (2670, 8204), (2930, 7476), (3115, 7032), (3516, 6230), (3560, 6153), (3738, 5860), (4102, 5340), (4395, 4984)]