81819740

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{2143}}^1$

素因数の和:2258

約数の個数: 48

約数和(自身を含む): 181536768

約数和(自身を除く): 99717028

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 83, 92, 115, 166, 230, 332, 415, 460, 830, 1660, 1909, 2143, 3818, 4286, 7636, 8572, 9545, 10715, 19090, 21430, 38180, 42860, 49289, 98578, 177869, 197156, 246445, 355738, 492890, 711476, 889345, 985780, 1778690, 3557380, 4090987, 8181974, 16363948, 20454935, 40909870, 81819740]

約数ペア:

[(1, 81819740), (2, 40909870), (4, 20454935), (5, 16363948), (10, 8181974), (20, 4090987), (23, 3557380), (46, 1778690), (83, 985780), (92, 889345), (115, 711476), (166, 492890), (230, 355738), (332, 246445), (415, 197156), (460, 177869), (830, 98578), (1660, 49289), (1909, 42860), (2143, 38180), (3818, 21430), (4286, 19090), (7636, 10715), (8572, 9545)]