81747500

素因数分解:

$2^2\times 5^4\times {\mathrm{19}}^1\times {\mathrm{1721}}^1$

素因数の和:1764

約数の個数: 60

約数和(自身を含む): 188283480

約数和(自身を除く): 106535980

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 125, 190, 250, 380, 475, 500, 625, 950, 1250, 1721, 1900, 2375, 2500, 3442, 4750, 6884, 8605, 9500, 11875, 17210, 23750, 32699, 34420, 43025, 47500, 65398, 86050, 130796, 163495, 172100, 215125, 326990, 430250, 653980, 817475, 860500, 1075625, 1634950, 2151250, 3269900, 4087375, 4302500, 8174750, 16349500, 20436875, 40873750, 81747500]

約数ペア:

[(1, 81747500), (2, 40873750), (4, 20436875), (5, 16349500), (10, 8174750), (19, 4302500), (20, 4087375), (25, 3269900), (38, 2151250), (50, 1634950), (76, 1075625), (95, 860500), (100, 817475), (125, 653980), (190, 430250), (250, 326990), (380, 215125), (475, 172100), (500, 163495), (625, 130796), (950, 86050), (1250, 65398), (1721, 47500), (1900, 43025), (2375, 34420), (2500, 32699), (3442, 23750), (4750, 17210), (6884, 11875), (8605, 9500)]