21373790

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{947}}^1$

素因数の和:1052

約数の個数: 32

約数和(自身を含む): 40202784

約数和(自身を除く): 18828994

約数列:

[1, 2, 5, 10, 37, 61, 74, 122, 185, 305, 370, 610, 947, 1894, 2257, 4514, 4735, 9470, 11285, 22570, 35039, 57767, 70078, 115534, 175195, 288835, 350390, 577670, 2137379, 4274758, 10686895, 21373790]

約数ペア:

[(1, 21373790), (2, 10686895), (5, 4274758), (10, 2137379), (37, 577670), (61, 350390), (74, 288835), (122, 175195), (185, 115534), (305, 70078), (370, 57767), (610, 35039), (947, 22570), (1894, 11285), (2257, 9470), (4514, 4735)]