20628795

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1$

素因数の和:196

約数の個数: 64

約数和(自身を含む): 38522880

約数和(自身を除く): 17894085

約数列:

[1, 3, 5, 11, 15, 31, 33, 37, 55, 93, 109, 111, 155, 165, 185, 327, 341, 407, 465, 545, 555, 1023, 1147, 1199, 1221, 1635, 1705, 2035, 3379, 3441, 3597, 4033, 5115, 5735, 5995, 6105, 10137, 12099, 12617, 16895, 17205, 17985, 20165, 37169, 37851, 44363, 50685, 60495, 63085, 111507, 125023, 133089, 185845, 189255, 221815, 375069, 557535, 625115, 665445, 1375253, 1875345, 4125759, 6876265, 20628795]

約数ペア:

[(1, 20628795), (3, 6876265), (5, 4125759), (11, 1875345), (15, 1375253), (31, 665445), (33, 625115), (37, 557535), (55, 375069), (93, 221815), (109, 189255), (111, 185845), (155, 133089), (165, 125023), (185, 111507), (327, 63085), (341, 60495), (407, 50685), (465, 44363), (545, 37851), (555, 37169), (1023, 20165), (1147, 17985), (1199, 17205), (1221, 16895), (1635, 12617), (1705, 12099), (2035, 10137), (3379, 6105), (3441, 5995), (3597, 5735), (4033, 5115)]