18948750

素因数分解:

$2^1\times 3^1\times 5^4\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:219

約数の個数: 80

約数和(自身を含む): 49184256

約数和(自身を除く): 30235506

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 31, 50, 62, 75, 93, 125, 150, 155, 163, 186, 250, 310, 326, 375, 465, 489, 625, 750, 775, 815, 930, 978, 1250, 1550, 1630, 1875, 2325, 2445, 3750, 3875, 4075, 4650, 4890, 5053, 7750, 8150, 10106, 11625, 12225, 15159, 19375, 20375, 23250, 24450, 25265, 30318, 38750, 40750, 50530, 58125, 61125, 75795, 101875, 116250, 122250, 126325, 151590, 203750, 252650, 305625, 378975, 611250, 631625, 757950, 1263250, 1894875, 3158125, 3789750, 6316250, 9474375, 18948750]

約数ペア:

[(1, 18948750), (2, 9474375), (3, 6316250), (5, 3789750), (6, 3158125), (10, 1894875), (15, 1263250), (25, 757950), (30, 631625), (31, 611250), (50, 378975), (62, 305625), (75, 252650), (93, 203750), (125, 151590), (150, 126325), (155, 122250), (163, 116250), (186, 101875), (250, 75795), (310, 61125), (326, 58125), (375, 50530), (465, 40750), (489, 38750), (625, 30318), (750, 25265), (775, 24450), (815, 23250), (930, 20375), (978, 19375), (1250, 15159), (1550, 12225), (1630, 11625), (1875, 10106), (2325, 8150), (2445, 7750), (3750, 5053), (3875, 4890), (4075, 4650)]