21837790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{971}}^1$

素因数の和:1164

約数の個数: 32

約数和(自身を含む): 42620256

約数和(自身を除く): 20782466

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 173, 346, 865, 971, 1730, 1942, 2249, 4498, 4855, 9710, 11245, 12623, 22490, 25246, 63115, 126230, 167983, 335966, 839915, 1679830, 2183779, 4367558, 10918895, 21837790]

約数ペア:

[(1, 21837790), (2, 10918895), (5, 4367558), (10, 2183779), (13, 1679830), (26, 839915), (65, 335966), (130, 167983), (173, 126230), (346, 63115), (865, 25246), (971, 22490), (1730, 12623), (1942, 11245), (2249, 9710), (4498, 4855)]