20216480

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4357}}^1$

素因数の和:4401

約数の個数: 48

約数和(自身を含む): 49419720

約数和(自身を除く): 29203240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 116, 145, 160, 232, 290, 464, 580, 928, 1160, 2320, 4357, 4640, 8714, 17428, 21785, 34856, 43570, 69712, 87140, 126353, 139424, 174280, 252706, 348560, 505412, 631765, 697120, 1010824, 1263530, 2021648, 2527060, 4043296, 5054120, 10108240, 20216480]

約数ペア:

[(1, 20216480), (2, 10108240), (4, 5054120), (5, 4043296), (8, 2527060), (10, 2021648), (16, 1263530), (20, 1010824), (29, 697120), (32, 631765), (40, 505412), (58, 348560), (80, 252706), (116, 174280), (145, 139424), (160, 126353), (232, 87140), (290, 69712), (464, 43570), (580, 34856), (928, 21785), (1160, 17428), (2320, 8714), (4357, 4640)]