18538642

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{163}}^1$

素因数の和:298

約数の個数: 32

約数和(自身を含む): 30582720

約数和(自身を除く): 12044078

約数列:

[1, 2, 19, 38, 41, 73, 82, 146, 163, 326, 779, 1387, 1558, 2774, 2993, 3097, 5986, 6194, 6683, 11899, 13366, 23798, 56867, 113734, 126977, 226081, 253954, 452162, 487859, 975718, 9269321, 18538642]

約数ペア:

[(1, 18538642), (2, 9269321), (19, 975718), (38, 487859), (41, 452162), (73, 253954), (82, 226081), (146, 126977), (163, 113734), (326, 56867), (779, 23798), (1387, 13366), (1558, 11899), (2774, 6683), (2993, 6194), (3097, 5986)]