1289723900

素因数分解:

$2^2\times 5^2\times {\mathrm{419}}^1\times {\mathrm{30781}}^1$

素因数の和:31214

約数の個数: 36

約数和(自身を含む): 2805471480

約数和(自身を除く): 1515747580

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 419, 838, 1676, 2095, 4190, 8380, 10475, 20950, 30781, 41900, 61562, 123124, 153905, 307810, 615620, 769525, 1539050, 3078100, 12897239, 25794478, 51588956, 64486195, 128972390, 257944780, 322430975, 644861950, 1289723900]

約数ペア:

[(1, 1289723900), (2, 644861950), (4, 322430975), (5, 257944780), (10, 128972390), (20, 64486195), (25, 51588956), (50, 25794478), (100, 12897239), (419, 3078100), (838, 1539050), (1676, 769525), (2095, 615620), (4190, 307810), (8380, 153905), (10475, 123124), (20950, 61562), (30781, 41900)]