20382860

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{173}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 44374176

約数和(自身を除く): 23991316

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 137, 172, 173, 215, 274, 346, 430, 548, 685, 692, 860, 865, 1370, 1730, 2740, 3460, 5891, 7439, 11782, 14878, 23564, 23701, 29455, 29756, 37195, 47402, 58910, 74390, 94804, 117820, 118505, 148780, 237010, 474020, 1019143, 2038286, 4076572, 5095715, 10191430, 20382860]

約数ペア:

[(1, 20382860), (2, 10191430), (4, 5095715), (5, 4076572), (10, 2038286), (20, 1019143), (43, 474020), (86, 237010), (137, 148780), (172, 118505), (173, 117820), (215, 94804), (274, 74390), (346, 58910), (430, 47402), (548, 37195), (685, 29756), (692, 29455), (860, 23701), (865, 23564), (1370, 14878), (1730, 11782), (2740, 7439), (3460, 5891)]