20620980

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{4243}}^1$

素因数の和:4267

約数の個数: 72

約数和(自身を含む): 64882272

約数和(自身を除く): 44261292

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, 243, 270, 324, 405, 486, 540, 810, 972, 1215, 1620, 2430, 4243, 4860, 8486, 12729, 16972, 21215, 25458, 38187, 42430, 50916, 63645, 76374, 84860, 114561, 127290, 152748, 190935, 229122, 254580, 343683, 381870, 458244, 572805, 687366, 763740, 1031049, 1145610, 1374732, 1718415, 2062098, 2291220, 3436830, 4124196, 5155245, 6873660, 10310490, 20620980]

約数ペア:

[(1, 20620980), (2, 10310490), (3, 6873660), (4, 5155245), (5, 4124196), (6, 3436830), (9, 2291220), (10, 2062098), (12, 1718415), (15, 1374732), (18, 1145610), (20, 1031049), (27, 763740), (30, 687366), (36, 572805), (45, 458244), (54, 381870), (60, 343683), (81, 254580), (90, 229122), (108, 190935), (135, 152748), (162, 127290), (180, 114561), (243, 84860), (270, 76374), (324, 63645), (405, 50916), (486, 42430), (540, 38187), (810, 25458), (972, 21215), (1215, 16972), (1620, 12729), (2430, 8486), (4243, 4860)]