21282420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{113}}^1$

素因数の和:241

約数の個数: 96

約数和(自身を含む): 62358912

約数和(自身を除く): 41076492

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 73, 86, 113, 129, 146, 172, 215, 219, 226, 258, 292, 339, 365, 430, 438, 452, 516, 565, 645, 678, 730, 860, 876, 1095, 1130, 1290, 1356, 1460, 1695, 2190, 2260, 2580, 3139, 3390, 4380, 4859, 6278, 6780, 8249, 9417, 9718, 12556, 14577, 15695, 16498, 18834, 19436, 24295, 24747, 29154, 31390, 32996, 37668, 41245, 47085, 48590, 49494, 58308, 62780, 72885, 82490, 94170, 97180, 98988, 123735, 145770, 164980, 188340, 247470, 291540, 354707, 494940, 709414, 1064121, 1418828, 1773535, 2128242, 3547070, 4256484, 5320605, 7094140, 10641210, 21282420]

約数ペア:

[(1, 21282420), (2, 10641210), (3, 7094140), (4, 5320605), (5, 4256484), (6, 3547070), (10, 2128242), (12, 1773535), (15, 1418828), (20, 1064121), (30, 709414), (43, 494940), (60, 354707), (73, 291540), (86, 247470), (113, 188340), (129, 164980), (146, 145770), (172, 123735), (215, 98988), (219, 97180), (226, 94170), (258, 82490), (292, 72885), (339, 62780), (365, 58308), (430, 49494), (438, 48590), (452, 47085), (516, 41245), (565, 37668), (645, 32996), (678, 31390), (730, 29154), (860, 24747), (876, 24295), (1095, 19436), (1130, 18834), (1290, 16498), (1356, 15695), (1460, 14577), (1695, 12556), (2190, 9718), (2260, 9417), (2580, 8249), (3139, 6780), (3390, 6278), (4380, 4859)]