81571860

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1171}}^1$

素因数の和:1235

約数の個数: 120

約数和(自身を含む): 262068576

約数和(自身を除く): 180496716

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 43, 45, 54, 60, 81, 86, 90, 108, 129, 135, 162, 172, 180, 215, 258, 270, 324, 387, 405, 430, 516, 540, 645, 774, 810, 860, 1161, 1171, 1290, 1548, 1620, 1935, 2322, 2342, 2580, 3483, 3513, 3870, 4644, 4684, 5805, 5855, 6966, 7026, 7740, 10539, 11610, 11710, 13932, 14052, 17415, 17565, 21078, 23220, 23420, 31617, 34830, 35130, 42156, 50353, 52695, 63234, 69660, 70260, 94851, 100706, 105390, 126468, 151059, 158085, 189702, 201412, 210780, 251765, 302118, 316170, 379404, 453177, 474255, 503530, 604236, 632340, 755295, 906354, 948510, 1007060, 1359531, 1510590, 1812708, 1897020, 2265885, 2719062, 3021180, 4078593, 4531770, 5438124, 6797655, 8157186, 9063540, 13595310, 16314372, 20392965, 27190620, 40785930, 81571860]

約数ペア:

[(1, 81571860), (2, 40785930), (3, 27190620), (4, 20392965), (5, 16314372), (6, 13595310), (9, 9063540), (10, 8157186), (12, 6797655), (15, 5438124), (18, 4531770), (20, 4078593), (27, 3021180), (30, 2719062), (36, 2265885), (43, 1897020), (45, 1812708), (54, 1510590), (60, 1359531), (81, 1007060), (86, 948510), (90, 906354), (108, 755295), (129, 632340), (135, 604236), (162, 503530), (172, 474255), (180, 453177), (215, 379404), (258, 316170), (270, 302118), (324, 251765), (387, 210780), (405, 201412), (430, 189702), (516, 158085), (540, 151059), (645, 126468), (774, 105390), (810, 100706), (860, 94851), (1161, 70260), (1171, 69660), (1290, 63234), (1548, 52695), (1620, 50353), (1935, 42156), (2322, 35130), (2342, 34830), (2580, 31617), (3483, 23420), (3513, 23220), (3870, 21078), (4644, 17565), (4684, 17415), (5805, 14052), (5855, 13932), (6966, 11710), (7026, 11610), (7740, 10539)]