81321480

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{569}}^1$

素因数の和:983

約数の個数: 96

約数和(自身を含む): 265426200

約数和(自身を除く): 184104720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 397, 569, 794, 1138, 1191, 1588, 1707, 1985, 2276, 2382, 2845, 3176, 3414, 3573, 3970, 4552, 4764, 5121, 5690, 5955, 6828, 7146, 7940, 8535, 9528, 10242, 11380, 11910, 13656, 14292, 15880, 17070, 17865, 20484, 22760, 23820, 25605, 28584, 34140, 35730, 40968, 47640, 51210, 68280, 71460, 102420, 142920, 204840, 225893, 451786, 677679, 903572, 1129465, 1355358, 1807144, 2033037, 2258930, 2710716, 3388395, 4066074, 4517860, 5421432, 6776790, 8132148, 9035720, 10165185, 13553580, 16264296, 20330370, 27107160, 40660740, 81321480]

約数ペア:

[(1, 81321480), (2, 40660740), (3, 27107160), (4, 20330370), (5, 16264296), (6, 13553580), (8, 10165185), (9, 9035720), (10, 8132148), (12, 6776790), (15, 5421432), (18, 4517860), (20, 4066074), (24, 3388395), (30, 2710716), (36, 2258930), (40, 2033037), (45, 1807144), (60, 1355358), (72, 1129465), (90, 903572), (120, 677679), (180, 451786), (360, 225893), (397, 204840), (569, 142920), (794, 102420), (1138, 71460), (1191, 68280), (1588, 51210), (1707, 47640), (1985, 40968), (2276, 35730), (2382, 34140), (2845, 28584), (3176, 25605), (3414, 23820), (3573, 22760), (3970, 20484), (4552, 17865), (4764, 17070), (5121, 15880), (5690, 14292), (5955, 13656), (6828, 11910), (7146, 11380), (7940, 10242), (8535, 9528)]