21000984050

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{2543}}^1\times {\mathrm{8693}}^1$

素因数の和:11267

約数の個数: 48

約数和(自身を含む): 41138616960

約数和(自身を除く): 20137632910

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 95, 190, 475, 950, 2543, 5086, 8693, 12715, 17386, 25430, 43465, 48317, 63575, 86930, 96634, 127150, 165167, 217325, 241585, 330334, 434650, 483170, 825835, 1207925, 1651670, 2415850, 4129175, 8258350, 22106299, 44212598, 110531495, 221062990, 420019681, 552657475, 840039362, 1105314950, 2100098405, 4200196810, 10500492025, 21000984050]

約数ペア:

[(1, 21000984050), (2, 10500492025), (5, 4200196810), (10, 2100098405), (19, 1105314950), (25, 840039362), (38, 552657475), (50, 420019681), (95, 221062990), (190, 110531495), (475, 44212598), (950, 22106299), (2543, 8258350), (5086, 4129175), (8693, 2415850), (12715, 1651670), (17386, 1207925), (25430, 825835), (43465, 483170), (48317, 434650), (63575, 330334), (86930, 241585), (96634, 217325), (127150, 165167)]