20800980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{115561}}^1$

素因数の和:115576

約数の個数: 36

約数和(自身を含む): 63096852

約数和(自身を除く): 42295872

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 115561, 231122, 346683, 462244, 577805, 693366, 1040049, 1155610, 1386732, 1733415, 2080098, 2311220, 3466830, 4160196, 5200245, 6933660, 10400490, 20800980]

約数ペア:

[(1, 20800980), (2, 10400490), (3, 6933660), (4, 5200245), (5, 4160196), (6, 3466830), (9, 2311220), (10, 2080098), (12, 1733415), (15, 1386732), (18, 1155610), (20, 1040049), (30, 693366), (36, 577805), (45, 462244), (60, 346683), (90, 231122), (180, 115561)]