18815680

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4523}}^1$

素因数の和:4553

約数の個数: 56

約数和(自身を含む): 48262032

約数和(自身を除く): 29446352

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 4523, 9046, 18092, 22615, 36184, 45230, 58799, 72368, 90460, 117598, 144736, 180920, 235196, 289472, 293995, 361840, 470392, 587990, 723680, 940784, 1175980, 1447360, 1881568, 2351960, 3763136, 4703920, 9407840, 18815680]

約数ペア:

[(1, 18815680), (2, 9407840), (4, 4703920), (5, 3763136), (8, 2351960), (10, 1881568), (13, 1447360), (16, 1175980), (20, 940784), (26, 723680), (32, 587990), (40, 470392), (52, 361840), (64, 293995), (65, 289472), (80, 235196), (104, 180920), (130, 144736), (160, 117598), (208, 90460), (260, 72368), (320, 58799), (416, 45230), (520, 36184), (832, 22615), (1040, 18092), (2080, 9046), (4160, 4523)]