1220427

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:105

約数の個数: 40

約数和(自身を含む): 2100560

約数和(自身を除く): 880133

約数列:

[1, 3, 9, 13, 19, 27, 39, 57, 61, 81, 117, 171, 183, 247, 351, 513, 549, 741, 793, 1053, 1159, 1539, 1647, 2223, 2379, 3477, 4941, 6669, 7137, 10431, 15067, 20007, 21411, 31293, 45201, 64233, 93879, 135603, 406809, 1220427]

約数ペア:

[(1, 1220427), (3, 406809), (9, 135603), (13, 93879), (19, 64233), (27, 45201), (39, 31293), (57, 21411), (61, 20007), (81, 15067), (117, 10431), (171, 7137), (183, 6669), (247, 4941), (351, 3477), (513, 2379), (549, 2223), (741, 1647), (793, 1539), (1053, 1159)]