18722520

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{397}}^1$

素因数の和:545

約数の個数: 96

約数和(自身を含む): 61467120

約数和(自身を除く): 42744600

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 131, 180, 262, 360, 393, 397, 524, 655, 786, 794, 1048, 1179, 1191, 1310, 1572, 1588, 1965, 1985, 2358, 2382, 2620, 3144, 3176, 3573, 3930, 3970, 4716, 4764, 5240, 5895, 5955, 7146, 7860, 7940, 9432, 9528, 11790, 11910, 14292, 15720, 15880, 17865, 23580, 23820, 28584, 35730, 47160, 47640, 52007, 71460, 104014, 142920, 156021, 208028, 260035, 312042, 416056, 468063, 520070, 624084, 780105, 936126, 1040140, 1248168, 1560210, 1872252, 2080280, 2340315, 3120420, 3744504, 4680630, 6240840, 9361260, 18722520]

約数ペア:

[(1, 18722520), (2, 9361260), (3, 6240840), (4, 4680630), (5, 3744504), (6, 3120420), (8, 2340315), (9, 2080280), (10, 1872252), (12, 1560210), (15, 1248168), (18, 1040140), (20, 936126), (24, 780105), (30, 624084), (36, 520070), (40, 468063), (45, 416056), (60, 312042), (72, 260035), (90, 208028), (120, 156021), (131, 142920), (180, 104014), (262, 71460), (360, 52007), (393, 47640), (397, 47160), (524, 35730), (655, 28584), (786, 23820), (794, 23580), (1048, 17865), (1179, 15880), (1191, 15720), (1310, 14292), (1572, 11910), (1588, 11790), (1965, 9528), (1985, 9432), (2358, 7940), (2382, 7860), (2620, 7146), (3144, 5955), (3176, 5895), (3573, 5240), (3930, 4764), (3970, 4716)]