20946700

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{233}}^1$

素因数の和:307

約数の個数: 72

約数和(自身を含む): 48746880

約数和(自身を除く): 27800180

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 31, 50, 58, 62, 100, 116, 124, 145, 155, 233, 290, 310, 466, 580, 620, 725, 775, 899, 932, 1165, 1450, 1550, 1798, 2330, 2900, 3100, 3596, 4495, 4660, 5825, 6757, 7223, 8990, 11650, 13514, 14446, 17980, 22475, 23300, 27028, 28892, 33785, 36115, 44950, 67570, 72230, 89900, 135140, 144460, 168925, 180575, 209467, 337850, 361150, 418934, 675700, 722300, 837868, 1047335, 2094670, 4189340, 5236675, 10473350, 20946700]

約数ペア:

[(1, 20946700), (2, 10473350), (4, 5236675), (5, 4189340), (10, 2094670), (20, 1047335), (25, 837868), (29, 722300), (31, 675700), (50, 418934), (58, 361150), (62, 337850), (100, 209467), (116, 180575), (124, 168925), (145, 144460), (155, 135140), (233, 89900), (290, 72230), (310, 67570), (466, 44950), (580, 36115), (620, 33785), (725, 28892), (775, 27028), (899, 23300), (932, 22475), (1165, 17980), (1450, 14446), (1550, 13514), (1798, 11650), (2330, 8990), (2900, 7223), (3100, 6757), (3596, 5825), (4495, 4660)]