20903890

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{1153}}^1$

素因数の和:1211

約数の個数: 48

約数和(自身を含む): 44992152

約数和(自身を除く): 24088262

約数列:

[1, 2, 5, 7, 10, 14, 35, 37, 49, 70, 74, 98, 185, 245, 259, 370, 490, 518, 1153, 1295, 1813, 2306, 2590, 3626, 5765, 8071, 9065, 11530, 16142, 18130, 40355, 42661, 56497, 80710, 85322, 112994, 213305, 282485, 298627, 426610, 564970, 597254, 1493135, 2090389, 2986270, 4180778, 10451945, 20903890]

約数ペア:

[(1, 20903890), (2, 10451945), (5, 4180778), (7, 2986270), (10, 2090389), (14, 1493135), (35, 597254), (37, 564970), (49, 426610), (70, 298627), (74, 282485), (98, 213305), (185, 112994), (245, 85322), (259, 80710), (370, 56497), (490, 42661), (518, 40355), (1153, 18130), (1295, 16142), (1813, 11530), (2306, 9065), (2590, 8071), (3626, 5765)]