16605620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{491}}^1$

素因数の和:608

約数の個数: 48

約数和(自身を含む): 37195200

約数和(自身を除く): 20589580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 89, 95, 178, 190, 356, 380, 445, 491, 890, 982, 1691, 1780, 1964, 2455, 3382, 4910, 6764, 8455, 9329, 9820, 16910, 18658, 33820, 37316, 43699, 46645, 87398, 93290, 174796, 186580, 218495, 436990, 830281, 873980, 1660562, 3321124, 4151405, 8302810, 16605620]

約数ペア:

[(1, 16605620), (2, 8302810), (4, 4151405), (5, 3321124), (10, 1660562), (19, 873980), (20, 830281), (38, 436990), (76, 218495), (89, 186580), (95, 174796), (178, 93290), (190, 87398), (356, 46645), (380, 43699), (445, 37316), (491, 33820), (890, 18658), (982, 16910), (1691, 9820), (1780, 9329), (1964, 8455), (2455, 6764), (3382, 4910)]