19937008

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{13693}}^1$

素因数の和:13721

約数の個数: 40

約数和(自身を含む): 47545568

約数和(自身を除く): 27608560

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 13693, 27386, 54772, 95851, 109544, 178009, 191702, 219088, 356018, 383404, 712036, 766808, 1246063, 1424072, 1533616, 2492126, 2848144, 4984252, 9968504, 19937008]

約数ペア:

[(1, 19937008), (2, 9968504), (4, 4984252), (7, 2848144), (8, 2492126), (13, 1533616), (14, 1424072), (16, 1246063), (26, 766808), (28, 712036), (52, 383404), (56, 356018), (91, 219088), (104, 191702), (112, 178009), (182, 109544), (208, 95851), (364, 54772), (728, 27386), (1456, 13693)]