81697140

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{21613}}^1$

素因数の和:21638

約数の個数: 96

約数和(自身を含む): 290492160

約数和(自身を除く): 208795020

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 252, 270, 315, 378, 420, 540, 630, 756, 945, 1260, 1890, 3780, 21613, 43226, 64839, 86452, 108065, 129678, 151291, 194517, 216130, 259356, 302582, 324195, 389034, 432260, 453873, 583551, 605164, 648390, 756455, 778068, 907746, 972585, 1167102, 1296780, 1361619, 1512910, 1815492, 1945170, 2269365, 2334204, 2723238, 2917755, 3025820, 3890340, 4084857, 4538730, 5446476, 5835510, 6808095, 8169714, 9077460, 11671020, 13616190, 16339428, 20424285, 27232380, 40848570, 81697140]

約数ペア:

[(1, 81697140), (2, 40848570), (3, 27232380), (4, 20424285), (5, 16339428), (6, 13616190), (7, 11671020), (9, 9077460), (10, 8169714), (12, 6808095), (14, 5835510), (15, 5446476), (18, 4538730), (20, 4084857), (21, 3890340), (27, 3025820), (28, 2917755), (30, 2723238), (35, 2334204), (36, 2269365), (42, 1945170), (45, 1815492), (54, 1512910), (60, 1361619), (63, 1296780), (70, 1167102), (84, 972585), (90, 907746), (105, 778068), (108, 756455), (126, 648390), (135, 605164), (140, 583551), (180, 453873), (189, 432260), (210, 389034), (252, 324195), (270, 302582), (315, 259356), (378, 216130), (420, 194517), (540, 151291), (630, 129678), (756, 108065), (945, 86452), (1260, 64839), (1890, 43226), (3780, 21613)]