18899660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{463}}^1$

素因数の和:642

約数の個数: 48

約数和(自身を含む): 43107456

約数和(自身を除く): 24207796

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 157, 260, 314, 463, 628, 785, 926, 1570, 1852, 2041, 2315, 3140, 4082, 4630, 6019, 8164, 9260, 10205, 12038, 20410, 24076, 30095, 40820, 60190, 72691, 120380, 145382, 290764, 363455, 726910, 944983, 1453820, 1889966, 3779932, 4724915, 9449830, 18899660]

約数ペア:

[(1, 18899660), (2, 9449830), (4, 4724915), (5, 3779932), (10, 1889966), (13, 1453820), (20, 944983), (26, 726910), (52, 363455), (65, 290764), (130, 145382), (157, 120380), (260, 72691), (314, 60190), (463, 40820), (628, 30095), (785, 24076), (926, 20410), (1570, 12038), (1852, 10205), (2041, 9260), (2315, 8164), (3140, 6019), (4082, 4630)]