12688460

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{557}}^1$

素因数の和:650

約数の個数: 48

約数和(自身を含む): 28685664

約数和(自身を除く): 15997204

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 67, 68, 85, 134, 170, 268, 335, 340, 557, 670, 1114, 1139, 1340, 2228, 2278, 2785, 4556, 5570, 5695, 9469, 11140, 11390, 18938, 22780, 37319, 37876, 47345, 74638, 94690, 149276, 186595, 189380, 373190, 634423, 746380, 1268846, 2537692, 3172115, 6344230, 12688460]

約数ペア:

[(1, 12688460), (2, 6344230), (4, 3172115), (5, 2537692), (10, 1268846), (17, 746380), (20, 634423), (34, 373190), (67, 189380), (68, 186595), (85, 149276), (134, 94690), (170, 74638), (268, 47345), (335, 37876), (340, 37319), (557, 22780), (670, 18938), (1114, 11390), (1139, 11140), (1340, 9469), (2228, 5695), (2278, 5570), (2785, 4556)]