81248750

素因数分解:

$2^1\times 5^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{311}}^1$

素因数の和:363

約数の個数: 80

約数和(自身を含む): 175443840

約数和(自身を除く): 94195090

約数列:

[1, 2, 5, 10, 11, 19, 22, 25, 38, 50, 55, 95, 110, 125, 190, 209, 250, 275, 311, 418, 475, 550, 622, 625, 950, 1045, 1250, 1375, 1555, 2090, 2375, 2750, 3110, 3421, 4750, 5225, 5909, 6842, 6875, 7775, 10450, 11818, 11875, 13750, 15550, 17105, 23750, 26125, 29545, 34210, 38875, 52250, 59090, 64999, 77750, 85525, 129998, 130625, 147725, 171050, 194375, 261250, 295450, 324995, 388750, 427625, 649990, 738625, 855250, 1477250, 1624975, 2138125, 3249950, 3693125, 4276250, 7386250, 8124875, 16249750, 40624375, 81248750]

約数ペア:

[(1, 81248750), (2, 40624375), (5, 16249750), (10, 8124875), (11, 7386250), (19, 4276250), (22, 3693125), (25, 3249950), (38, 2138125), (50, 1624975), (55, 1477250), (95, 855250), (110, 738625), (125, 649990), (190, 427625), (209, 388750), (250, 324995), (275, 295450), (311, 261250), (418, 194375), (475, 171050), (550, 147725), (622, 130625), (625, 129998), (950, 85525), (1045, 77750), (1250, 64999), (1375, 59090), (1555, 52250), (2090, 38875), (2375, 34210), (2750, 29545), (3110, 26125), (3421, 23750), (4750, 17105), (5225, 15550), (5909, 13750), (6842, 11875), (6875, 11818), (7775, 10450)]