20970885

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:166

約数の個数: 64

約数和(自身を含む): 38497536

約数和(自身を除く): 17526651

約数列:

[1, 3, 5, 13, 15, 39, 41, 43, 61, 65, 123, 129, 183, 195, 205, 215, 305, 533, 559, 615, 645, 793, 915, 1599, 1677, 1763, 2379, 2501, 2623, 2665, 2795, 3965, 5289, 7503, 7869, 7995, 8385, 8815, 11895, 12505, 13115, 22919, 26445, 32513, 34099, 37515, 39345, 68757, 97539, 102297, 107543, 114595, 162565, 170495, 322629, 343785, 487695, 511485, 537715, 1398059, 1613145, 4194177, 6990295, 20970885]

約数ペア:

[(1, 20970885), (3, 6990295), (5, 4194177), (13, 1613145), (15, 1398059), (39, 537715), (41, 511485), (43, 487695), (61, 343785), (65, 322629), (123, 170495), (129, 162565), (183, 114595), (195, 107543), (205, 102297), (215, 97539), (305, 68757), (533, 39345), (559, 37515), (615, 34099), (645, 32513), (793, 26445), (915, 22919), (1599, 13115), (1677, 12505), (1763, 11895), (2379, 8815), (2501, 8385), (2623, 7995), (2665, 7869), (2795, 7503), (3965, 5289)]