21167139140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4877221}}^1$

素因数の和:4877268

約数の個数: 48

約数和(自身を含む): 52439890944

約数和(自身を除く): 31272751804

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 4877221, 9754442, 19508884, 24386105, 34140547, 48772210, 68281094, 97544420, 136562188, 151193851, 170702735, 302387702, 341405470, 604775404, 682810940, 755969255, 1058356957, 1511938510, 2116713914, 3023877020, 4233427828, 5291784785, 10583569570, 21167139140]

約数ペア:

[(1, 21167139140), (2, 10583569570), (4, 5291784785), (5, 4233427828), (7, 3023877020), (10, 2116713914), (14, 1511938510), (20, 1058356957), (28, 755969255), (31, 682810940), (35, 604775404), (62, 341405470), (70, 302387702), (124, 170702735), (140, 151193851), (155, 136562188), (217, 97544420), (310, 68281094), (434, 48772210), (620, 34140547), (868, 24386105), (1085, 19508884), (2170, 9754442), (4340, 4877221)]