212913980

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{67807}}^1$

素因数の和:67973

約数の個数: 24

約数和(自身を含む): 449973888

約数和(自身を除く): 237059908

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 67807, 135614, 271228, 339035, 678070, 1356140, 10645699, 21291398, 42582796, 53228495, 106456990, 212913980]

約数ペア:

[(1, 212913980), (2, 106456990), (4, 53228495), (5, 42582796), (10, 21291398), (20, 10645699), (157, 1356140), (314, 678070), (628, 339035), (785, 271228), (1570, 135614), (3140, 67807)]