21095460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{719}}^1$

素因数の和:897

約数の個数: 72

約数和(自身を含む): 64471680

約数和(自身を除く): 43376220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 163, 180, 326, 489, 652, 719, 815, 978, 1438, 1467, 1630, 1956, 2157, 2445, 2876, 2934, 3260, 3595, 4314, 4890, 5868, 6471, 7190, 7335, 8628, 9780, 10785, 12942, 14380, 14670, 21570, 25884, 29340, 32355, 43140, 64710, 117197, 129420, 234394, 351591, 468788, 585985, 703182, 1054773, 1171970, 1406364, 1757955, 2109546, 2343940, 3515910, 4219092, 5273865, 7031820, 10547730, 21095460]

約数ペア:

[(1, 21095460), (2, 10547730), (3, 7031820), (4, 5273865), (5, 4219092), (6, 3515910), (9, 2343940), (10, 2109546), (12, 1757955), (15, 1406364), (18, 1171970), (20, 1054773), (30, 703182), (36, 585985), (45, 468788), (60, 351591), (90, 234394), (163, 129420), (180, 117197), (326, 64710), (489, 43140), (652, 32355), (719, 29340), (815, 25884), (978, 21570), (1438, 14670), (1467, 14380), (1630, 12942), (1956, 10785), (2157, 9780), (2445, 8628), (2876, 7335), (2934, 7190), (3260, 6471), (3595, 5868), (4314, 4890)]