21529810

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{349}}^1$

素因数の和:586

約数の個数: 32

約数和(自身を含む): 40320000

約数和(自身を除く): 18790190

約数列:

[1, 2, 5, 10, 31, 62, 155, 199, 310, 349, 398, 698, 995, 1745, 1990, 3490, 6169, 10819, 12338, 21638, 30845, 54095, 61690, 69451, 108190, 138902, 347255, 694510, 2152981, 4305962, 10764905, 21529810]

約数ペア:

[(1, 21529810), (2, 10764905), (5, 4305962), (10, 2152981), (31, 694510), (62, 347255), (155, 138902), (199, 108190), (310, 69451), (349, 61690), (398, 54095), (698, 30845), (995, 21638), (1745, 12338), (1990, 10819), (3490, 6169)]