81738990

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{3121}}^1$

素因数の和:3234

約数の個数: 64

約数和(自身を含む): 220288320

約数和(自身を除く): 138549330

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 97, 135, 194, 270, 291, 485, 582, 873, 970, 1455, 1746, 2619, 2910, 3121, 4365, 5238, 6242, 8730, 9363, 13095, 15605, 18726, 26190, 28089, 31210, 46815, 56178, 84267, 93630, 140445, 168534, 280890, 302737, 421335, 605474, 842670, 908211, 1513685, 1816422, 2724633, 3027370, 4541055, 5449266, 8173899, 9082110, 13623165, 16347798, 27246330, 40869495, 81738990]

約数ペア:

[(1, 81738990), (2, 40869495), (3, 27246330), (5, 16347798), (6, 13623165), (9, 9082110), (10, 8173899), (15, 5449266), (18, 4541055), (27, 3027370), (30, 2724633), (45, 1816422), (54, 1513685), (90, 908211), (97, 842670), (135, 605474), (194, 421335), (270, 302737), (291, 280890), (485, 168534), (582, 140445), (873, 93630), (970, 84267), (1455, 56178), (1746, 46815), (2619, 31210), (2910, 28089), (3121, 26190), (4365, 18726), (5238, 15605), (6242, 13095), (8730, 9363)]