19802960

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14561}}^1$

素因数の和:14591

約数の個数: 40

約数和(自身を含む): 48753576

約数和(自身を除く): 28950616

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 14561, 29122, 58244, 72805, 116488, 145610, 232976, 247537, 291220, 495074, 582440, 990148, 1164880, 1237685, 1980296, 2475370, 3960592, 4950740, 9901480, 19802960]

約数ペア:

[(1, 19802960), (2, 9901480), (4, 4950740), (5, 3960592), (8, 2475370), (10, 1980296), (16, 1237685), (17, 1164880), (20, 990148), (34, 582440), (40, 495074), (68, 291220), (80, 247537), (85, 232976), (136, 145610), (170, 116488), (272, 72805), (340, 58244), (680, 29122), (1360, 14561)]