20883980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1709}}^1$

素因数の和:1778

約数の個数: 48

約数和(自身を含む): 48263040

約数和(自身を除く): 27379060

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 47, 52, 65, 94, 130, 188, 235, 260, 470, 611, 940, 1222, 1709, 2444, 3055, 3418, 6110, 6836, 8545, 12220, 17090, 22217, 34180, 44434, 80323, 88868, 111085, 160646, 222170, 321292, 401615, 444340, 803230, 1044199, 1606460, 2088398, 4176796, 5220995, 10441990, 20883980]

約数ペア:

[(1, 20883980), (2, 10441990), (4, 5220995), (5, 4176796), (10, 2088398), (13, 1606460), (20, 1044199), (26, 803230), (47, 444340), (52, 401615), (65, 321292), (94, 222170), (130, 160646), (188, 111085), (235, 88868), (260, 80323), (470, 44434), (611, 34180), (940, 22217), (1222, 17090), (1709, 12220), (2444, 8545), (3055, 6836), (3418, 6110)]