818988140

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{421}}^1\times {\mathrm{4229}}^1$

素因数の和:4682

約数の個数: 48

約数和(自身を含む): 1799340480

約数和(自身を除く): 980352340

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 421, 460, 842, 1684, 2105, 4210, 4229, 8420, 8458, 9683, 16916, 19366, 21145, 38732, 42290, 48415, 84580, 96830, 97267, 193660, 194534, 389068, 486335, 972670, 1780409, 1945340, 3560818, 7121636, 8902045, 17804090, 35608180, 40949407, 81898814, 163797628, 204747035, 409494070, 818988140]

約数ペア:

[(1, 818988140), (2, 409494070), (4, 204747035), (5, 163797628), (10, 81898814), (20, 40949407), (23, 35608180), (46, 17804090), (92, 8902045), (115, 7121636), (230, 3560818), (421, 1945340), (460, 1780409), (842, 972670), (1684, 486335), (2105, 389068), (4210, 194534), (4229, 193660), (8420, 97267), (8458, 96830), (9683, 84580), (16916, 48415), (19366, 42290), (21145, 38732)]