21388860

素因数分解:

$2^2\times 3^8\times 5^1\times {\mathrm{163}}^1$

素因数の和:196

約数の個数: 108

約数和(自身を含む): 67784808

約数和(自身を除く): 46395948

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, 163, 180, 243, 270, 324, 326, 405, 486, 489, 540, 652, 729, 810, 815, 972, 978, 1215, 1458, 1467, 1620, 1630, 1956, 2187, 2430, 2445, 2916, 2934, 3260, 3645, 4374, 4401, 4860, 4890, 5868, 6561, 7290, 7335, 8748, 8802, 9780, 10935, 13122, 13203, 14580, 14670, 17604, 21870, 22005, 26244, 26406, 29340, 32805, 39609, 43740, 44010, 52812, 65610, 66015, 79218, 88020, 118827, 131220, 132030, 158436, 198045, 237654, 264060, 356481, 396090, 475308, 594135, 712962, 792180, 1069443, 1188270, 1425924, 1782405, 2138886, 2376540, 3564810, 4277772, 5347215, 7129620, 10694430, 21388860]

約数ペア:

[(1, 21388860), (2, 10694430), (3, 7129620), (4, 5347215), (5, 4277772), (6, 3564810), (9, 2376540), (10, 2138886), (12, 1782405), (15, 1425924), (18, 1188270), (20, 1069443), (27, 792180), (30, 712962), (36, 594135), (45, 475308), (54, 396090), (60, 356481), (81, 264060), (90, 237654), (108, 198045), (135, 158436), (162, 132030), (163, 131220), (180, 118827), (243, 88020), (270, 79218), (324, 66015), (326, 65610), (405, 52812), (486, 44010), (489, 43740), (540, 39609), (652, 32805), (729, 29340), (810, 26406), (815, 26244), (972, 22005), (978, 21870), (1215, 17604), (1458, 14670), (1467, 14580), (1620, 13203), (1630, 13122), (1956, 10935), (2187, 9780), (2430, 8802), (2445, 8748), (2916, 7335), (2934, 7290), (3260, 6561), (3645, 5868), (4374, 4890), (4401, 4860)]