19914544

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1429}}^1$

素因数の和:1517

約数の個数: 40

約数和(自身を含む): 42202160

約数和(自身を除く): 22287616

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 67, 104, 134, 208, 268, 536, 871, 1072, 1429, 1742, 2858, 3484, 5716, 6968, 11432, 13936, 18577, 22864, 37154, 74308, 95743, 148616, 191486, 297232, 382972, 765944, 1244659, 1531888, 2489318, 4978636, 9957272, 19914544]

約数ペア:

[(1, 19914544), (2, 9957272), (4, 4978636), (8, 2489318), (13, 1531888), (16, 1244659), (26, 765944), (52, 382972), (67, 297232), (104, 191486), (134, 148616), (208, 95743), (268, 74308), (536, 37154), (871, 22864), (1072, 18577), (1429, 13936), (1742, 11432), (2858, 6968), (3484, 5716)]