20730128

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{1039}}^1$

素因数の和:1119

約数の個数: 40

約数和(自身を含む): 42556800

約数和(自身を除く): 21826672

約数列:

[1, 2, 4, 8, 16, 29, 43, 58, 86, 116, 172, 232, 344, 464, 688, 1039, 1247, 2078, 2494, 4156, 4988, 8312, 9976, 16624, 19952, 30131, 44677, 60262, 89354, 120524, 178708, 241048, 357416, 482096, 714832, 1295633, 2591266, 5182532, 10365064, 20730128]

約数ペア:

[(1, 20730128), (2, 10365064), (4, 5182532), (8, 2591266), (16, 1295633), (29, 714832), (43, 482096), (58, 357416), (86, 241048), (116, 178708), (172, 120524), (232, 89354), (344, 60262), (464, 44677), (688, 30131), (1039, 19952), (1247, 16624), (2078, 9976), (2494, 8312), (4156, 4988)]