81391250

素因数分解:

$2^1\times 5^4\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1$

素因数の和:213

約数の個数: 80

約数和(自身を含む): 168696000

約数和(自身を除く): 87304750

約数列:

[1, 2, 5, 10, 19, 23, 25, 38, 46, 50, 95, 115, 125, 149, 190, 230, 250, 298, 437, 475, 575, 625, 745, 874, 950, 1150, 1250, 1490, 2185, 2375, 2831, 2875, 3427, 3725, 4370, 4750, 5662, 5750, 6854, 7450, 10925, 11875, 14155, 14375, 17135, 18625, 21850, 23750, 28310, 28750, 34270, 37250, 54625, 65113, 70775, 85675, 93125, 109250, 130226, 141550, 171350, 186250, 273125, 325565, 353875, 428375, 546250, 651130, 707750, 856750, 1627825, 1769375, 2141875, 3255650, 3538750, 4283750, 8139125, 16278250, 40695625, 81391250]

約数ペア:

[(1, 81391250), (2, 40695625), (5, 16278250), (10, 8139125), (19, 4283750), (23, 3538750), (25, 3255650), (38, 2141875), (46, 1769375), (50, 1627825), (95, 856750), (115, 707750), (125, 651130), (149, 546250), (190, 428375), (230, 353875), (250, 325565), (298, 273125), (437, 186250), (475, 171350), (575, 141550), (625, 130226), (745, 109250), (874, 93125), (950, 85675), (1150, 70775), (1250, 65113), (1490, 54625), (2185, 37250), (2375, 34270), (2831, 28750), (2875, 28310), (3427, 23750), (3725, 21850), (4370, 18625), (4750, 17135), (5662, 14375), (5750, 14155), (6854, 11875), (7450, 10925)]