21784450

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{997}}^1$

素因数の和:1051

約数の個数: 48

約数和(自身を含む): 44550720

約数和(自身を除く): 22766270

約数列:

[1, 2, 5, 10, 19, 23, 25, 38, 46, 50, 95, 115, 190, 230, 437, 475, 575, 874, 950, 997, 1150, 1994, 2185, 4370, 4985, 9970, 10925, 18943, 21850, 22931, 24925, 37886, 45862, 49850, 94715, 114655, 189430, 229310, 435689, 473575, 573275, 871378, 947150, 1146550, 2178445, 4356890, 10892225, 21784450]

約数ペア:

[(1, 21784450), (2, 10892225), (5, 4356890), (10, 2178445), (19, 1146550), (23, 947150), (25, 871378), (38, 573275), (46, 473575), (50, 435689), (95, 229310), (115, 189430), (190, 114655), (230, 94715), (437, 49850), (475, 45862), (575, 37886), (874, 24925), (950, 22931), (997, 21850), (1150, 18943), (1994, 10925), (2185, 9970), (4370, 4985)]