21747830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{967}}^1$

素因数の和:1160

約数の個数: 32

約数和(自身を含む): 42444864

約数和(自身を除く): 20697034

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 173, 346, 865, 967, 1730, 1934, 2249, 4498, 4835, 9670, 11245, 12571, 22490, 25142, 62855, 125710, 167291, 334582, 836455, 1672910, 2174783, 4349566, 10873915, 21747830]

約数ペア:

[(1, 21747830), (2, 10873915), (5, 4349566), (10, 2174783), (13, 1672910), (26, 836455), (65, 334582), (130, 167291), (173, 125710), (346, 62855), (865, 25142), (967, 22490), (1730, 12571), (1934, 11245), (2249, 9670), (4498, 4835)]