20480330

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{613}}^1$

素因数の和:890

約数の個数: 32

約数和(自身を含む): 39919824

約数和(自身を除く): 19439494

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 257, 514, 613, 1226, 1285, 2570, 3065, 3341, 6130, 6682, 7969, 15938, 16705, 33410, 39845, 79690, 157541, 315082, 787705, 1575410, 2048033, 4096066, 10240165, 20480330]

約数ペア:

[(1, 20480330), (2, 10240165), (5, 4096066), (10, 2048033), (13, 1575410), (26, 787705), (65, 315082), (130, 157541), (257, 79690), (514, 39845), (613, 33410), (1226, 16705), (1285, 15938), (2570, 7969), (3065, 6682), (3341, 6130)]