21945665

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{541}}^1$

素因数の和:633

約数の個数: 32

約数和(自身を含む): 32259840

約数和(自身を除く): 10314175

約数列:

[1, 5, 7, 19, 35, 61, 95, 133, 305, 427, 541, 665, 1159, 2135, 2705, 3787, 5795, 8113, 10279, 18935, 33001, 40565, 51395, 71953, 165005, 231007, 359765, 627019, 1155035, 3135095, 4389133, 21945665]

約数ペア:

[(1, 21945665), (5, 4389133), (7, 3135095), (19, 1155035), (35, 627019), (61, 359765), (95, 231007), (133, 165005), (305, 71953), (427, 51395), (541, 40565), (665, 33001), (1159, 18935), (2135, 10279), (2705, 8113), (3787, 5795)]