686766964

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{991}}^1\times {\mathrm{13327}}^1$

素因数の和:14335

約数の個数: 24

約数和(自身を含む): 1295694848

約数和(自身を除く): 608927884

約数列:

[1, 2, 4, 13, 26, 52, 991, 1982, 3964, 12883, 13327, 25766, 26654, 51532, 53308, 173251, 346502, 693004, 13207057, 26414114, 52828228, 171691741, 343383482, 686766964]

約数ペア:

[(1, 686766964), (2, 343383482), (4, 171691741), (13, 52828228), (26, 26414114), (52, 13207057), (991, 693004), (1982, 346502), (3964, 173251), (12883, 53308), (13327, 51532), (25766, 26654)]