19723750

素因数分解:

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

素因数の和:562

約数の個数: 40

約数和(自身を含む): 38237760

約数和(自身を除く): 18514010

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 125, 155, 250, 310, 509, 625, 775, 1018, 1250, 1550, 2545, 3875, 5090, 7750, 12725, 15779, 19375, 25450, 31558, 38750, 63625, 78895, 127250, 157790, 318125, 394475, 636250, 788950, 1972375, 3944750, 9861875, 19723750]

約数ペア:

[(1, 19723750), (2, 9861875), (5, 3944750), (10, 1972375), (25, 788950), (31, 636250), (50, 394475), (62, 318125), (125, 157790), (155, 127250), (250, 78895), (310, 63625), (509, 38750), (625, 31558), (775, 25450), (1018, 19375), (1250, 15779), (1550, 12725), (2545, 7750), (3875, 5090)]