19905354

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{239}}^1\times {\mathrm{661}}^1$

素因数の和:915

約数の個数: 48

約数和(自身を含む): 49570560

約数和(自身を除く): 29665206

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 239, 478, 661, 717, 1322, 1434, 1673, 1983, 2151, 3346, 3966, 4302, 4627, 5019, 5949, 9254, 10038, 11898, 13881, 15057, 27762, 30114, 41643, 83286, 157979, 315958, 473937, 947874, 1105853, 1421811, 2211706, 2843622, 3317559, 6635118, 9952677, 19905354]

約数ペア:

[(1, 19905354), (2, 9952677), (3, 6635118), (6, 3317559), (7, 2843622), (9, 2211706), (14, 1421811), (18, 1105853), (21, 947874), (42, 473937), (63, 315958), (126, 157979), (239, 83286), (478, 41643), (661, 30114), (717, 27762), (1322, 15057), (1434, 13881), (1673, 11898), (1983, 10038), (2151, 9254), (3346, 5949), (3966, 5019), (4302, 4627)]