19809153

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{67}}^1$

素因数の和:131

約数の個数: 72

約数和(自身を含む): 37722048

約数和(自身を除く): 17912895

約数列:

[1, 3, 7, 9, 13, 19, 21, 39, 57, 63, 67, 91, 117, 133, 171, 201, 247, 273, 361, 399, 469, 603, 741, 819, 871, 1083, 1197, 1273, 1407, 1729, 2223, 2527, 2613, 3249, 3819, 4221, 4693, 5187, 6097, 7581, 7839, 8911, 11457, 14079, 15561, 16549, 18291, 22743, 24187, 26733, 32851, 42237, 49647, 54873, 72561, 80199, 98553, 115843, 148941, 169309, 217683, 295659, 314431, 347529, 507927, 943293, 1042587, 1523781, 2201017, 2829879, 6603051, 19809153]

約数ペア:

[(1, 19809153), (3, 6603051), (7, 2829879), (9, 2201017), (13, 1523781), (19, 1042587), (21, 943293), (39, 507927), (57, 347529), (63, 314431), (67, 295659), (91, 217683), (117, 169309), (133, 148941), (171, 115843), (201, 98553), (247, 80199), (273, 72561), (361, 54873), (399, 49647), (469, 42237), (603, 32851), (741, 26733), (819, 24187), (871, 22743), (1083, 18291), (1197, 16549), (1273, 15561), (1407, 14079), (1729, 11457), (2223, 8911), (2527, 7839), (2613, 7581), (3249, 6097), (3819, 5187), (4221, 4693)]