26720720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25693}}^1$

素因数の和:25719

約数の個数: 40

約数和(自身を含む): 66907176

約数和(自身を除く): 40186456

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 25693, 51386, 102772, 128465, 205544, 256930, 334009, 411088, 513860, 668018, 1027720, 1336036, 1670045, 2055440, 2672072, 3340090, 5344144, 6680180, 13360360, 26720720]

約数ペア:

[(1, 26720720), (2, 13360360), (4, 6680180), (5, 5344144), (8, 3340090), (10, 2672072), (13, 2055440), (16, 1670045), (20, 1336036), (26, 1027720), (40, 668018), (52, 513860), (65, 411088), (80, 334009), (104, 256930), (130, 205544), (208, 128465), (260, 102772), (520, 51386), (1040, 25693)]