28171040

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{10357}}^1$

素因数の和:10389

約数の個数: 48

約数和(自身を含む): 70475832

約数和(自身を除く): 42304792

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 10357, 20714, 41428, 51785, 82856, 103570, 165712, 176069, 207140, 331424, 352138, 414280, 704276, 828560, 880345, 1408552, 1657120, 1760690, 2817104, 3521380, 5634208, 7042760, 14085520, 28171040]

約数ペア:

[(1, 28171040), (2, 14085520), (4, 7042760), (5, 5634208), (8, 3521380), (10, 2817104), (16, 1760690), (17, 1657120), (20, 1408552), (32, 880345), (34, 828560), (40, 704276), (68, 414280), (80, 352138), (85, 331424), (136, 207140), (160, 176069), (170, 165712), (272, 103570), (340, 82856), (544, 51785), (680, 41428), (1360, 20714), (2720, 10357)]