21162420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1321}}^1$

素因数の和:1425

約数の個数: 72

約数和(自身を含む): 64963080

約数和(自身を除く): 43800660

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, 1068, 1321, 1335, 1602, 1780, 2642, 2670, 3204, 3963, 4005, 5284, 5340, 6605, 7926, 8010, 11889, 13210, 15852, 16020, 19815, 23778, 26420, 39630, 47556, 59445, 79260, 117569, 118890, 235138, 237780, 352707, 470276, 587845, 705414, 1058121, 1175690, 1410828, 1763535, 2116242, 2351380, 3527070, 4232484, 5290605, 7054140, 10581210, 21162420]

約数ペア:

[(1, 21162420), (2, 10581210), (3, 7054140), (4, 5290605), (5, 4232484), (6, 3527070), (9, 2351380), (10, 2116242), (12, 1763535), (15, 1410828), (18, 1175690), (20, 1058121), (30, 705414), (36, 587845), (45, 470276), (60, 352707), (89, 237780), (90, 235138), (178, 118890), (180, 117569), (267, 79260), (356, 59445), (445, 47556), (534, 39630), (801, 26420), (890, 23778), (1068, 19815), (1321, 16020), (1335, 15852), (1602, 13210), (1780, 11889), (2642, 8010), (2670, 7926), (3204, 6605), (3963, 5340), (4005, 5284)]