20408810

素因数分解:

$2^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1\times {\mathrm{251}}^1$

素因数の和:478

約数の個数: 32

約数和(自身を含む): 37884672

約数和(自身を除く): 17475862

約数列:

[1, 2, 5, 10, 47, 94, 173, 235, 251, 346, 470, 502, 865, 1255, 1730, 2510, 8131, 11797, 16262, 23594, 40655, 43423, 58985, 81310, 86846, 117970, 217115, 434230, 2040881, 4081762, 10204405, 20408810]

約数ペア:

[(1, 20408810), (2, 10204405), (5, 4081762), (10, 2040881), (47, 434230), (94, 217115), (173, 117970), (235, 86846), (251, 81310), (346, 58985), (470, 43423), (502, 40655), (865, 23594), (1255, 16262), (1730, 11797), (2510, 8131)]