18993416

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{1009}}^1$

素因数の和:1209

約数の個数: 32

約数和(自身を含む): 38602200

約数和(自身を除く): 19608784

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 181, 362, 724, 1009, 1448, 2018, 2353, 4036, 4706, 8072, 9412, 13117, 18824, 26234, 52468, 104936, 182629, 365258, 730516, 1461032, 2374177, 4748354, 9496708, 18993416]

約数ペア:

[(1, 18993416), (2, 9496708), (4, 4748354), (8, 2374177), (13, 1461032), (26, 730516), (52, 365258), (104, 182629), (181, 104936), (362, 52468), (724, 26234), (1009, 18824), (1448, 13117), (2018, 9412), (2353, 8072), (4036, 4706)]