21064860

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{13003}}^1$

素因数の和:13024

約数の個数: 60

約数和(自身を含む): 66086328

約数和(自身を除く): 45021468

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 13003, 26006, 39009, 52012, 65015, 78018, 117027, 130030, 156036, 195045, 234054, 260060, 351081, 390090, 468108, 585135, 702162, 780180, 1053243, 1170270, 1404324, 1755405, 2106486, 2340540, 3510810, 4212972, 5266215, 7021620, 10532430, 21064860]

約数ペア:

[(1, 21064860), (2, 10532430), (3, 7021620), (4, 5266215), (5, 4212972), (6, 3510810), (9, 2340540), (10, 2106486), (12, 1755405), (15, 1404324), (18, 1170270), (20, 1053243), (27, 780180), (30, 702162), (36, 585135), (45, 468108), (54, 390090), (60, 351081), (81, 260060), (90, 234054), (108, 195045), (135, 156036), (162, 130030), (180, 117027), (270, 78018), (324, 65015), (405, 52012), (540, 39009), (810, 26006), (1620, 13003)]