19688655

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:244

約数の個数: 64

約数和(自身を含む): 38707200

約数和(自身を除く): 19018545

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 71, 95, 105, 133, 139, 213, 285, 355, 399, 417, 497, 665, 695, 973, 1065, 1349, 1491, 1995, 2085, 2485, 2641, 2919, 4047, 4865, 6745, 7455, 7923, 9443, 9869, 13205, 14595, 18487, 20235, 28329, 29607, 39615, 47215, 49345, 55461, 69083, 92435, 141645, 148035, 187511, 207249, 277305, 345415, 562533, 937555, 1036245, 1312577, 2812665, 3937731, 6562885, 19688655]

約数ペア:

[(1, 19688655), (3, 6562885), (5, 3937731), (7, 2812665), (15, 1312577), (19, 1036245), (21, 937555), (35, 562533), (57, 345415), (71, 277305), (95, 207249), (105, 187511), (133, 148035), (139, 141645), (213, 92435), (285, 69083), (355, 55461), (399, 49345), (417, 47215), (497, 39615), (665, 29607), (695, 28329), (973, 20235), (1065, 18487), (1349, 14595), (1491, 13205), (1995, 9869), (2085, 9443), (2485, 7923), (2641, 7455), (2919, 6745), (4047, 4865)]