81555420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{269}}^1$

素因数の和:475

約数の個数: 96

約数和(自身を含む): 238049280

約数和(自身を除く): 156493860

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 60, 62, 93, 124, 155, 163, 186, 269, 310, 326, 372, 465, 489, 538, 620, 652, 807, 815, 930, 978, 1076, 1345, 1614, 1630, 1860, 1956, 2445, 2690, 3228, 3260, 4035, 4890, 5053, 5380, 8070, 8339, 9780, 10106, 15159, 16140, 16678, 20212, 25017, 25265, 30318, 33356, 41695, 43847, 50034, 50530, 60636, 75795, 83390, 87694, 100068, 101060, 125085, 131541, 151590, 166780, 175388, 219235, 250170, 263082, 303180, 438470, 500340, 526164, 657705, 876940, 1315410, 1359257, 2630820, 2718514, 4077771, 5437028, 6796285, 8155542, 13592570, 16311084, 20388855, 27185140, 40777710, 81555420]

約数ペア:

[(1, 81555420), (2, 40777710), (3, 27185140), (4, 20388855), (5, 16311084), (6, 13592570), (10, 8155542), (12, 6796285), (15, 5437028), (20, 4077771), (30, 2718514), (31, 2630820), (60, 1359257), (62, 1315410), (93, 876940), (124, 657705), (155, 526164), (163, 500340), (186, 438470), (269, 303180), (310, 263082), (326, 250170), (372, 219235), (465, 175388), (489, 166780), (538, 151590), (620, 131541), (652, 125085), (807, 101060), (815, 100068), (930, 87694), (978, 83390), (1076, 75795), (1345, 60636), (1614, 50530), (1630, 50034), (1860, 43847), (1956, 41695), (2445, 33356), (2690, 30318), (3228, 25265), (3260, 25017), (4035, 20212), (4890, 16678), (5053, 16140), (5380, 15159), (8070, 10106), (8339, 9780)]