1991231494

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{64621}}^1$

素因数の和:64732

約数の個数: 32

約数和(自身を含む): 3573338112

約数和(自身を除く): 1582106618

約数列:

[1, 2, 7, 14, 31, 62, 71, 142, 217, 434, 497, 994, 2201, 4402, 15407, 30814, 64621, 129242, 452347, 904694, 2003251, 4006502, 4588091, 9176182, 14022757, 28045514, 32116637, 64233274, 142230821, 284461642, 995615747, 1991231494]

約数ペア:

[(1, 1991231494), (2, 995615747), (7, 284461642), (14, 142230821), (31, 64233274), (62, 32116637), (71, 28045514), (142, 14022757), (217, 9176182), (434, 4588091), (497, 4006502), (994, 2003251), (2201, 904694), (4402, 452347), (15407, 129242), (30814, 64621)]