28421880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{991}}^1$

素因数の和:1244

約数の個数: 64

約数和(自身を含む): 85708800

約数和(自身を除く): 57286920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 239, 478, 717, 956, 991, 1195, 1434, 1912, 1982, 2390, 2868, 2973, 3585, 3964, 4780, 4955, 5736, 5946, 7170, 7928, 9560, 9910, 11892, 14340, 14865, 19820, 23784, 28680, 29730, 39640, 59460, 118920, 236849, 473698, 710547, 947396, 1184245, 1421094, 1894792, 2368490, 2842188, 3552735, 4736980, 5684376, 7105470, 9473960, 14210940, 28421880]

約数ペア:

[(1, 28421880), (2, 14210940), (3, 9473960), (4, 7105470), (5, 5684376), (6, 4736980), (8, 3552735), (10, 2842188), (12, 2368490), (15, 1894792), (20, 1421094), (24, 1184245), (30, 947396), (40, 710547), (60, 473698), (120, 236849), (239, 118920), (478, 59460), (717, 39640), (956, 29730), (991, 28680), (1195, 23784), (1434, 19820), (1912, 14865), (1982, 14340), (2390, 11892), (2868, 9910), (2973, 9560), (3585, 7928), (3964, 7170), (4780, 5946), (4955, 5736)]