19985823

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{293}}^1$

素因数の和:376

約数の個数: 48

約数和(自身を含む): 34673184

約数和(自身を除く): 14687361

約数列:

[1, 3, 9, 11, 13, 33, 39, 53, 99, 117, 143, 159, 293, 429, 477, 583, 689, 879, 1287, 1749, 2067, 2637, 3223, 3809, 5247, 6201, 7579, 9669, 11427, 15529, 22737, 29007, 34281, 41899, 46587, 68211, 125697, 139761, 170819, 201877, 377091, 512457, 605631, 1537371, 1816893, 2220647, 6661941, 19985823]

約数ペア:

[(1, 19985823), (3, 6661941), (9, 2220647), (11, 1816893), (13, 1537371), (33, 605631), (39, 512457), (53, 377091), (99, 201877), (117, 170819), (143, 139761), (159, 125697), (293, 68211), (429, 46587), (477, 41899), (583, 34281), (689, 29007), (879, 22737), (1287, 15529), (1749, 11427), (2067, 9669), (2637, 7579), (3223, 6201), (3809, 5247)]