51281750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{509}}^1$

素因数の和:570

約数の個数: 64

約数和(自身を含む): 106928640

約数和(自身を除く): 55646890

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 125, 130, 155, 250, 310, 325, 403, 509, 650, 775, 806, 1018, 1550, 1625, 2015, 2545, 3250, 3875, 4030, 5090, 6617, 7750, 10075, 12725, 13234, 15779, 20150, 25450, 31558, 33085, 50375, 63625, 66170, 78895, 100750, 127250, 157790, 165425, 205127, 330850, 394475, 410254, 788950, 827125, 1025635, 1654250, 1972375, 2051270, 3944750, 5128175, 10256350, 25640875, 51281750]

約数ペア:

[(1, 51281750), (2, 25640875), (5, 10256350), (10, 5128175), (13, 3944750), (25, 2051270), (26, 1972375), (31, 1654250), (50, 1025635), (62, 827125), (65, 788950), (125, 410254), (130, 394475), (155, 330850), (250, 205127), (310, 165425), (325, 157790), (403, 127250), (509, 100750), (650, 78895), (775, 66170), (806, 63625), (1018, 50375), (1550, 33085), (1625, 31558), (2015, 25450), (2545, 20150), (3250, 15779), (3875, 13234), (4030, 12725), (5090, 10075), (6617, 7750)]