21688020

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{40163}}^1$

素因数の和:40181

約数の個数: 48

約数和(自身を含む): 67475520

約数和(自身を除く): 45787500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 40163, 80326, 120489, 160652, 200815, 240978, 361467, 401630, 481956, 602445, 722934, 803260, 1084401, 1204890, 1445868, 1807335, 2168802, 2409780, 3614670, 4337604, 5422005, 7229340, 10844010, 21688020]

約数ペア:

[(1, 21688020), (2, 10844010), (3, 7229340), (4, 5422005), (5, 4337604), (6, 3614670), (9, 2409780), (10, 2168802), (12, 1807335), (15, 1445868), (18, 1204890), (20, 1084401), (27, 803260), (30, 722934), (36, 602445), (45, 481956), (54, 401630), (60, 361467), (90, 240978), (108, 200815), (135, 160652), (180, 120489), (270, 80326), (540, 40163)]