15555420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{971}}^1$

素因数の和:1075

約数の個数: 72

約数和(自身を含む): 47764080

約数和(自身を除く): 32208660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 89, 90, 178, 180, 267, 356, 445, 534, 801, 890, 971, 1068, 1335, 1602, 1780, 1942, 2670, 2913, 3204, 3884, 4005, 4855, 5340, 5826, 8010, 8739, 9710, 11652, 14565, 16020, 17478, 19420, 29130, 34956, 43695, 58260, 86419, 87390, 172838, 174780, 259257, 345676, 432095, 518514, 777771, 864190, 1037028, 1296285, 1555542, 1728380, 2592570, 3111084, 3888855, 5185140, 7777710, 15555420]

約数ペア:

[(1, 15555420), (2, 7777710), (3, 5185140), (4, 3888855), (5, 3111084), (6, 2592570), (9, 1728380), (10, 1555542), (12, 1296285), (15, 1037028), (18, 864190), (20, 777771), (30, 518514), (36, 432095), (45, 345676), (60, 259257), (89, 174780), (90, 172838), (178, 87390), (180, 86419), (267, 58260), (356, 43695), (445, 34956), (534, 29130), (801, 19420), (890, 17478), (971, 16020), (1068, 14565), (1335, 11652), (1602, 9710), (1780, 8739), (1942, 8010), (2670, 5826), (2913, 5340), (3204, 4855), (3884, 4005)]