20781678738

素因数分解:

$2^1\times 3^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{811}}^1\times {\mathrm{1321}}^1$

素因数の和:2251

約数の個数: 64

約数和(自身を含む): 43127489664

約数和(自身を除く): 22345810926

約数列:

[1, 2, 3, 6, 53, 61, 106, 122, 159, 183, 318, 366, 811, 1321, 1622, 2433, 2642, 3233, 3963, 4866, 6466, 7926, 9699, 19398, 42983, 49471, 70013, 80581, 85966, 98942, 128949, 140026, 148413, 161162, 210039, 241743, 257898, 296826, 420078, 483486, 1071331, 2142662, 2621963, 3213993, 4270793, 5243926, 6427986, 7865889, 8541586, 12812379, 15731778, 25624758, 56780543, 65351191, 113561086, 130702382, 170341629, 196053573, 340683258, 392107146, 3463613123, 6927226246, 10390839369, 20781678738]

約数ペア:

[(1, 20781678738), (2, 10390839369), (3, 6927226246), (6, 3463613123), (53, 392107146), (61, 340683258), (106, 196053573), (122, 170341629), (159, 130702382), (183, 113561086), (318, 65351191), (366, 56780543), (811, 25624758), (1321, 15731778), (1622, 12812379), (2433, 8541586), (2642, 7865889), (3233, 6427986), (3963, 5243926), (4866, 4270793), (6466, 3213993), (7926, 2621963), (9699, 2142662), (19398, 1071331), (42983, 483486), (49471, 420078), (70013, 296826), (80581, 257898), (85966, 241743), (98942, 210039), (128949, 161162), (140026, 148413)]