20161177900

素因数分解:

$2^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{2131}}^1\times {\mathrm{2557}}^1$

素因数の和:4739

約数の個数: 72

約数和(自身を含む): 44970847376

約数和(自身を除く): 24809669476

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 50, 74, 100, 148, 185, 370, 740, 925, 1850, 2131, 2557, 3700, 4262, 5114, 8524, 10228, 10655, 12785, 21310, 25570, 42620, 51140, 53275, 63925, 78847, 94609, 106550, 127850, 157694, 189218, 213100, 255700, 315388, 378436, 394235, 473045, 788470, 946090, 1576940, 1892180, 1971175, 2365225, 3942350, 4730450, 5448967, 7884700, 9460900, 10897934, 21795868, 27244835, 54489670, 108979340, 136224175, 201611779, 272448350, 403223558, 544896700, 806447116, 1008058895, 2016117790, 4032235580, 5040294475, 10080588950, 20161177900]

約数ペア:

[(1, 20161177900), (2, 10080588950), (4, 5040294475), (5, 4032235580), (10, 2016117790), (20, 1008058895), (25, 806447116), (37, 544896700), (50, 403223558), (74, 272448350), (100, 201611779), (148, 136224175), (185, 108979340), (370, 54489670), (740, 27244835), (925, 21795868), (1850, 10897934), (2131, 9460900), (2557, 7884700), (3700, 5448967), (4262, 4730450), (5114, 3942350), (8524, 2365225), (10228, 1971175), (10655, 1892180), (12785, 1576940), (21310, 946090), (25570, 788470), (42620, 473045), (51140, 394235), (53275, 378436), (63925, 315388), (78847, 255700), (94609, 213100), (106550, 189218), (127850, 157694)]