19895988

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:217

約数の個数: 96

約数和(自身を含む): 55883520

約数和(自身を除く): 35987532

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 41, 42, 53, 82, 84, 106, 109, 123, 159, 164, 212, 218, 246, 287, 318, 327, 371, 436, 492, 574, 636, 654, 742, 763, 861, 1113, 1148, 1308, 1484, 1526, 1722, 2173, 2226, 2289, 3052, 3444, 4346, 4452, 4469, 4578, 5777, 6519, 8692, 8938, 9156, 11554, 13038, 13407, 15211, 17331, 17876, 23108, 26076, 26814, 30422, 31283, 34662, 40439, 45633, 53628, 60844, 62566, 69324, 80878, 91266, 93849, 121317, 125132, 161756, 182532, 187698, 236857, 242634, 375396, 473714, 485268, 710571, 947428, 1421142, 1657999, 2842284, 3315998, 4973997, 6631996, 9947994, 19895988]

約数ペア:

[(1, 19895988), (2, 9947994), (3, 6631996), (4, 4973997), (6, 3315998), (7, 2842284), (12, 1657999), (14, 1421142), (21, 947428), (28, 710571), (41, 485268), (42, 473714), (53, 375396), (82, 242634), (84, 236857), (106, 187698), (109, 182532), (123, 161756), (159, 125132), (164, 121317), (212, 93849), (218, 91266), (246, 80878), (287, 69324), (318, 62566), (327, 60844), (371, 53628), (436, 45633), (492, 40439), (574, 34662), (636, 31283), (654, 30422), (742, 26814), (763, 26076), (861, 23108), (1113, 17876), (1148, 17331), (1308, 15211), (1484, 13407), (1526, 13038), (1722, 11554), (2173, 9156), (2226, 8938), (2289, 8692), (3052, 6519), (3444, 5777), (4346, 4578), (4452, 4469)]