19764880

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14533}}^1$

素因数の和:14563

約数の個数: 40

約数和(自身を含む): 48659832

約数和(自身を除く): 28894952

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 14533, 29066, 58132, 72665, 116264, 145330, 232528, 247061, 290660, 494122, 581320, 988244, 1162640, 1235305, 1976488, 2470610, 3952976, 4941220, 9882440, 19764880]

約数ペア:

[(1, 19764880), (2, 9882440), (4, 4941220), (5, 3952976), (8, 2470610), (10, 1976488), (16, 1235305), (17, 1162640), (20, 988244), (34, 581320), (40, 494122), (68, 290660), (80, 247061), (85, 232528), (136, 145330), (170, 116264), (272, 72665), (340, 58132), (680, 29066), (1360, 14533)]