20813865

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{2633}}^1$

素因数の和:2689

約数の個数: 32

約数和(自身を含む): 36412416

約数和(自身を除く): 15598551

約数列:

[1, 3, 5, 15, 17, 31, 51, 85, 93, 155, 255, 465, 527, 1581, 2633, 2635, 7899, 7905, 13165, 39495, 44761, 81623, 134283, 223805, 244869, 408115, 671415, 1224345, 1387591, 4162773, 6937955, 20813865]

約数ペア:

[(1, 20813865), (3, 6937955), (5, 4162773), (15, 1387591), (17, 1224345), (31, 671415), (51, 408115), (85, 244869), (93, 223805), (155, 134283), (255, 81623), (465, 44761), (527, 39495), (1581, 13165), (2633, 7905), (2635, 7899)]