19493240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1973}}^1$

素因数の和:2016

約数の個数: 64

約数和(自身を含む): 49744800

約数和(自身を除く): 30251560

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1973, 1976, 2470, 3946, 4940, 7892, 9865, 9880, 15784, 19730, 25649, 37487, 39460, 51298, 74974, 78920, 102596, 128245, 149948, 187435, 205192, 256490, 299896, 374870, 487331, 512980, 749740, 974662, 1025960, 1499480, 1949324, 2436655, 3898648, 4873310, 9746620, 19493240]

約数ペア:

[(1, 19493240), (2, 9746620), (4, 4873310), (5, 3898648), (8, 2436655), (10, 1949324), (13, 1499480), (19, 1025960), (20, 974662), (26, 749740), (38, 512980), (40, 487331), (52, 374870), (65, 299896), (76, 256490), (95, 205192), (104, 187435), (130, 149948), (152, 128245), (190, 102596), (247, 78920), (260, 74974), (380, 51298), (494, 39460), (520, 37487), (760, 25649), (988, 19730), (1235, 15784), (1973, 9880), (1976, 9865), (2470, 7892), (3946, 4940)]