78895000

素因数分解:

$2^3\times 5^4\times {\mathrm{31}}^1\times {\mathrm{509}}^1$

素因数の和:566

約数の個数: 80

約数和(自身を含む): 191188800

約数和(自身を除く): 112293800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 125, 155, 200, 248, 250, 310, 500, 509, 620, 625, 775, 1000, 1018, 1240, 1250, 1550, 2036, 2500, 2545, 3100, 3875, 4072, 5000, 5090, 6200, 7750, 10180, 12725, 15500, 15779, 19375, 20360, 25450, 31000, 31558, 38750, 50900, 63116, 63625, 77500, 78895, 101800, 126232, 127250, 155000, 157790, 254500, 315580, 318125, 394475, 509000, 631160, 636250, 788950, 1272500, 1577900, 1972375, 2545000, 3155800, 3944750, 7889500, 9861875, 15779000, 19723750, 39447500, 78895000]

約数ペア:

[(1, 78895000), (2, 39447500), (4, 19723750), (5, 15779000), (8, 9861875), (10, 7889500), (20, 3944750), (25, 3155800), (31, 2545000), (40, 1972375), (50, 1577900), (62, 1272500), (100, 788950), (124, 636250), (125, 631160), (155, 509000), (200, 394475), (248, 318125), (250, 315580), (310, 254500), (500, 157790), (509, 155000), (620, 127250), (625, 126232), (775, 101800), (1000, 78895), (1018, 77500), (1240, 63625), (1250, 63116), (1550, 50900), (2036, 38750), (2500, 31558), (2545, 31000), (3100, 25450), (3875, 20360), (4072, 19375), (5000, 15779), (5090, 15500), (6200, 12725), (7750, 10180)]