13409720

素因数分解:

$2^3\times 5^1\times {\mathrm{523}}^1\times {\mathrm{641}}^1$

素因数の和:1175

約数の個数: 32

約数和(自身を含む): 30276720

約数和(自身を除く): 16867000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 523, 641, 1046, 1282, 2092, 2564, 2615, 3205, 4184, 5128, 5230, 6410, 10460, 12820, 20920, 25640, 335243, 670486, 1340972, 1676215, 2681944, 3352430, 6704860, 13409720]

約数ペア:

[(1, 13409720), (2, 6704860), (4, 3352430), (5, 2681944), (8, 1676215), (10, 1340972), (20, 670486), (40, 335243), (523, 25640), (641, 20920), (1046, 12820), (1282, 10460), (2092, 6410), (2564, 5230), (2615, 5128), (3205, 4184)]