81855450

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{101}}^1\times {\mathrm{1801}}^1$

素因数の和:1920

約数の個数: 72

約数和(自身を含む): 222219036

約数和(自身を除く): 140363586

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 101, 150, 202, 225, 303, 450, 505, 606, 909, 1010, 1515, 1801, 1818, 2525, 3030, 3602, 4545, 5050, 5403, 7575, 9005, 9090, 10806, 15150, 16209, 18010, 22725, 27015, 32418, 45025, 45450, 54030, 81045, 90050, 135075, 162090, 181901, 270150, 363802, 405225, 545703, 810450, 909505, 1091406, 1637109, 1819010, 2728515, 3274218, 4547525, 5457030, 8185545, 9095050, 13642575, 16371090, 27285150, 40927725, 81855450]

約数ペア:

[(1, 81855450), (2, 40927725), (3, 27285150), (5, 16371090), (6, 13642575), (9, 9095050), (10, 8185545), (15, 5457030), (18, 4547525), (25, 3274218), (30, 2728515), (45, 1819010), (50, 1637109), (75, 1091406), (90, 909505), (101, 810450), (150, 545703), (202, 405225), (225, 363802), (303, 270150), (450, 181901), (505, 162090), (606, 135075), (909, 90050), (1010, 81045), (1515, 54030), (1801, 45450), (1818, 45025), (2525, 32418), (3030, 27015), (3602, 22725), (4545, 18010), (5050, 16209), (5403, 15150), (7575, 10806), (9005, 9090)]