18911080

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{167}}^1$

素因数の和:346

約数の個数: 64

約数和(自身を含む): 45360000

約数和(自身を除く): 26448920

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 149, 152, 167, 190, 298, 334, 380, 596, 668, 745, 760, 835, 1192, 1336, 1490, 1670, 2831, 2980, 3173, 3340, 5662, 5960, 6346, 6680, 11324, 12692, 14155, 15865, 22648, 24883, 25384, 28310, 31730, 49766, 56620, 63460, 99532, 113240, 124415, 126920, 199064, 248830, 472777, 497660, 945554, 995320, 1891108, 2363885, 3782216, 4727770, 9455540, 18911080]

約数ペア:

[(1, 18911080), (2, 9455540), (4, 4727770), (5, 3782216), (8, 2363885), (10, 1891108), (19, 995320), (20, 945554), (38, 497660), (40, 472777), (76, 248830), (95, 199064), (149, 126920), (152, 124415), (167, 113240), (190, 99532), (298, 63460), (334, 56620), (380, 49766), (596, 31730), (668, 28310), (745, 25384), (760, 24883), (835, 22648), (1192, 15865), (1336, 14155), (1490, 12692), (1670, 11324), (2831, 6680), (2980, 6346), (3173, 5960), (3340, 5662)]