18378320

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{113}}^1$

素因数の和:252

約数の個数: 80

約数和(自身を含む): 45800640

約数和(自身を除く): 27422320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 107, 113, 152, 190, 214, 226, 304, 380, 428, 452, 535, 565, 760, 856, 904, 1070, 1130, 1520, 1712, 1808, 2033, 2140, 2147, 2260, 4066, 4280, 4294, 4520, 8132, 8560, 8588, 9040, 10165, 10735, 12091, 16264, 17176, 20330, 21470, 24182, 32528, 34352, 40660, 42940, 48364, 60455, 81320, 85880, 96728, 120910, 162640, 171760, 193456, 229729, 241820, 459458, 483640, 918916, 967280, 1148645, 1837832, 2297290, 3675664, 4594580, 9189160, 18378320]

約数ペア:

[(1, 18378320), (2, 9189160), (4, 4594580), (5, 3675664), (8, 2297290), (10, 1837832), (16, 1148645), (19, 967280), (20, 918916), (38, 483640), (40, 459458), (76, 241820), (80, 229729), (95, 193456), (107, 171760), (113, 162640), (152, 120910), (190, 96728), (214, 85880), (226, 81320), (304, 60455), (380, 48364), (428, 42940), (452, 40660), (535, 34352), (565, 32528), (760, 24182), (856, 21470), (904, 20330), (1070, 17176), (1130, 16264), (1520, 12091), (1712, 10735), (1808, 10165), (2033, 9040), (2140, 8588), (2147, 8560), (2260, 8132), (4066, 4520), (4280, 4294)]