21357238

素因数分解:

$2^1\times 7^3\times {\mathrm{163}}^1\times {\mathrm{191}}^1$

素因数の和:377

約数の個数: 32

約数和(自身を含む): 37785600

約数和(自身を除く): 16428362

約数列:

[1, 2, 7, 14, 49, 98, 163, 191, 326, 343, 382, 686, 1141, 1337, 2282, 2674, 7987, 9359, 15974, 18718, 31133, 55909, 62266, 65513, 111818, 131026, 217931, 435862, 1525517, 3051034, 10678619, 21357238]

約数ペア:

[(1, 21357238), (2, 10678619), (7, 3051034), (14, 1525517), (49, 435862), (98, 217931), (163, 131026), (191, 111818), (326, 65513), (343, 62266), (382, 55909), (686, 31133), (1141, 18718), (1337, 15974), (2282, 9359), (2674, 7987)]