212488120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{408631}}^1$

素因数の和:408655

約数の個数: 32

約数和(自身を含む): 514876320

約数和(自身を除く): 302388200

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 408631, 817262, 1634524, 2043155, 3269048, 4086310, 5312203, 8172620, 10624406, 16345240, 21248812, 26561015, 42497624, 53122030, 106244060, 212488120]

約数ペア:

[(1, 212488120), (2, 106244060), (4, 53122030), (5, 42497624), (8, 26561015), (10, 21248812), (13, 16345240), (20, 10624406), (26, 8172620), (40, 5312203), (52, 4086310), (65, 3269048), (104, 2043155), (130, 1634524), (260, 817262), (520, 408631)]