1901984980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{877}}^1\times {\mathrm{2213}}^1$

素因数の和:3113

約数の個数: 72

約数和(自身を含む): 4653677448

約数和(自身を除く): 2751692468

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 877, 980, 1754, 2213, 3508, 4385, 4426, 6139, 8770, 8852, 11065, 12278, 15491, 17540, 22130, 24556, 30695, 30982, 42973, 44260, 61390, 61964, 77455, 85946, 108437, 122780, 154910, 171892, 214865, 216874, 309820, 429730, 433748, 542185, 859460, 1084370, 1940801, 2168740, 3881602, 7763204, 9704005, 13585607, 19408010, 27171214, 38816020, 54342428, 67928035, 95099249, 135856070, 190198498, 271712140, 380396996, 475496245, 950992490, 1901984980]

約数ペア:

[(1, 1901984980), (2, 950992490), (4, 475496245), (5, 380396996), (7, 271712140), (10, 190198498), (14, 135856070), (20, 95099249), (28, 67928035), (35, 54342428), (49, 38816020), (70, 27171214), (98, 19408010), (140, 13585607), (196, 9704005), (245, 7763204), (490, 3881602), (877, 2168740), (980, 1940801), (1754, 1084370), (2213, 859460), (3508, 542185), (4385, 433748), (4426, 429730), (6139, 309820), (8770, 216874), (8852, 214865), (11065, 171892), (12278, 154910), (15491, 122780), (17540, 108437), (22130, 85946), (24556, 77455), (30695, 61964), (30982, 61390), (42973, 44260)]