20338945

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{151}}^1$

素因数の和:277

約数の個数: 32

約数和(自身を含む): 28016640

約数和(自身を除く): 7677695

約数列:

[1, 5, 11, 31, 55, 79, 151, 155, 341, 395, 755, 869, 1661, 1705, 2449, 4345, 4681, 8305, 11929, 12245, 23405, 26939, 51491, 59645, 131219, 134695, 257455, 369799, 656095, 1848995, 4067789, 20338945]

約数ペア:

[(1, 20338945), (5, 4067789), (11, 1848995), (31, 656095), (55, 369799), (79, 257455), (151, 134695), (155, 131219), (341, 59645), (395, 51491), (755, 26939), (869, 23405), (1661, 12245), (1705, 11929), (2449, 8305), (4345, 4681)]