21921340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{5051}}^1$

素因数の和:5098

約数の個数: 48

約数和(自身を含む): 54319104

約数和(自身を除く): 32397764

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 5051, 10102, 20204, 25255, 35357, 50510, 70714, 101020, 141428, 156581, 176785, 313162, 353570, 626324, 707140, 782905, 1096067, 1565810, 2192134, 3131620, 4384268, 5480335, 10960670, 21921340]

約数ペア:

[(1, 21921340), (2, 10960670), (4, 5480335), (5, 4384268), (7, 3131620), (10, 2192134), (14, 1565810), (20, 1096067), (28, 782905), (31, 707140), (35, 626324), (62, 353570), (70, 313162), (124, 176785), (140, 156581), (155, 141428), (217, 101020), (310, 70714), (434, 50510), (620, 35357), (868, 25255), (1085, 20204), (2170, 10102), (4340, 5051)]