1991410900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{857}}^1\times {\mathrm{1223}}^1$

素因数の和:2113

約数の個数: 72

約数和(自身を含む): 4557833280

約数和(自身を除く): 2566422380

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 380, 475, 857, 950, 1223, 1714, 1900, 2446, 3428, 4285, 4892, 6115, 8570, 12230, 16283, 17140, 21425, 23237, 24460, 30575, 32566, 42850, 46474, 61150, 65132, 81415, 85700, 92948, 116185, 122300, 162830, 232370, 325660, 407075, 464740, 580925, 814150, 1048111, 1161850, 1628300, 2096222, 2323700, 4192444, 5240555, 10481110, 19914109, 20962220, 26202775, 39828218, 52405550, 79656436, 99570545, 104811100, 199141090, 398282180, 497852725, 995705450, 1991410900]

約数ペア:

[(1, 1991410900), (2, 995705450), (4, 497852725), (5, 398282180), (10, 199141090), (19, 104811100), (20, 99570545), (25, 79656436), (38, 52405550), (50, 39828218), (76, 26202775), (95, 20962220), (100, 19914109), (190, 10481110), (380, 5240555), (475, 4192444), (857, 2323700), (950, 2096222), (1223, 1628300), (1714, 1161850), (1900, 1048111), (2446, 814150), (3428, 580925), (4285, 464740), (4892, 407075), (6115, 325660), (8570, 232370), (12230, 162830), (16283, 122300), (17140, 116185), (21425, 92948), (23237, 85700), (24460, 81415), (30575, 65132), (32566, 61150), (42850, 46474)]