81119320

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{49463}}^1$

素因数の和:49515

約数の個数: 32

約数和(自身を含む): 186973920

約数和(自身を除く): 105854600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 49463, 98926, 197852, 247315, 395704, 494630, 989260, 1978520, 2027983, 4055966, 8111932, 10139915, 16223864, 20279830, 40559660, 81119320]

約数ペア:

[(1, 81119320), (2, 40559660), (4, 20279830), (5, 16223864), (8, 10139915), (10, 8111932), (20, 4055966), (40, 2027983), (41, 1978520), (82, 989260), (164, 494630), (205, 395704), (328, 247315), (410, 197852), (820, 98926), (1640, 49463)]