21479930

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{1531}}^1$

素因数の和:1622

約数の個数: 32

約数和(自身を含む): 41033088

約数和(自身を除く): 19553158

約数列:

[1, 2, 5, 10, 23, 46, 61, 115, 122, 230, 305, 610, 1403, 1531, 2806, 3062, 7015, 7655, 14030, 15310, 35213, 70426, 93391, 176065, 186782, 352130, 466955, 933910, 2147993, 4295986, 10739965, 21479930]

約数ペア:

[(1, 21479930), (2, 10739965), (5, 4295986), (10, 2147993), (23, 933910), (46, 466955), (61, 352130), (115, 186782), (122, 176065), (230, 93391), (305, 70426), (610, 35213), (1403, 15310), (1531, 14030), (2806, 7655), (3062, 7015)]