20881406

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{397}}^1$

素因数の和:453

約数の個数: 48

約数和(自身を含む): 41054496

約数和(自身を除く): 20173090

約数列:

[1, 2, 7, 13, 14, 17, 26, 34, 91, 119, 182, 221, 238, 289, 397, 442, 578, 794, 1547, 2023, 2779, 3094, 3757, 4046, 5161, 5558, 6749, 7514, 10322, 13498, 26299, 36127, 47243, 52598, 72254, 87737, 94486, 114733, 175474, 229466, 614159, 803131, 1228318, 1491529, 1606262, 2983058, 10440703, 20881406]

約数ペア:

[(1, 20881406), (2, 10440703), (7, 2983058), (13, 1606262), (14, 1491529), (17, 1228318), (26, 803131), (34, 614159), (91, 229466), (119, 175474), (182, 114733), (221, 94486), (238, 87737), (289, 72254), (397, 52598), (442, 47243), (578, 36127), (794, 26299), (1547, 13498), (2023, 10322), (2779, 7514), (3094, 6749), (3757, 5558), (4046, 5161)]