81280980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41051}}^1$

素因数の和:41077

約数の個数: 72

約数和(自身を含む): 268972704

約数和(自身を除く): 187691724

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 41051, 82102, 123153, 164204, 205255, 246306, 369459, 410510, 451561, 492612, 615765, 738918, 821020, 903122, 1231530, 1354683, 1477836, 1806244, 1847295, 2257805, 2463060, 2709366, 3694590, 4064049, 4515610, 5418732, 6773415, 7389180, 8128098, 9031220, 13546830, 16256196, 20320245, 27093660, 40640490, 81280980]

約数ペア:

[(1, 81280980), (2, 40640490), (3, 27093660), (4, 20320245), (5, 16256196), (6, 13546830), (9, 9031220), (10, 8128098), (11, 7389180), (12, 6773415), (15, 5418732), (18, 4515610), (20, 4064049), (22, 3694590), (30, 2709366), (33, 2463060), (36, 2257805), (44, 1847295), (45, 1806244), (55, 1477836), (60, 1354683), (66, 1231530), (90, 903122), (99, 821020), (110, 738918), (132, 615765), (165, 492612), (180, 451561), (198, 410510), (220, 369459), (330, 246306), (396, 205255), (495, 164204), (660, 123153), (990, 82102), (1980, 41051)]