64247500

素因数分解:

$2^2\times 5^4\times {\mathrm{31}}^1\times {\mathrm{829}}^1$

素因数の和:884

約数の個数: 60

約数和(自身を含む): 145203520

約数和(自身を除く): 80956020

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 125, 155, 250, 310, 500, 620, 625, 775, 829, 1250, 1550, 1658, 2500, 3100, 3316, 3875, 4145, 7750, 8290, 15500, 16580, 19375, 20725, 25699, 38750, 41450, 51398, 77500, 82900, 102796, 103625, 128495, 207250, 256990, 414500, 513980, 518125, 642475, 1036250, 1284950, 2072500, 2569900, 3212375, 6424750, 12849500, 16061875, 32123750, 64247500]

約数ペア:

[(1, 64247500), (2, 32123750), (4, 16061875), (5, 12849500), (10, 6424750), (20, 3212375), (25, 2569900), (31, 2072500), (50, 1284950), (62, 1036250), (100, 642475), (124, 518125), (125, 513980), (155, 414500), (250, 256990), (310, 207250), (500, 128495), (620, 103625), (625, 102796), (775, 82900), (829, 77500), (1250, 51398), (1550, 41450), (1658, 38750), (2500, 25699), (3100, 20725), (3316, 19375), (3875, 16580), (4145, 15500), (7750, 8290)]