78432340

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{163}}^1\times {\mathrm{491}}^1$

素因数の和:677

約数の個数: 72

約数和(自身を含む): 193167072

約数和(自身を除く): 114734732

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 163, 196, 245, 326, 490, 491, 652, 815, 980, 982, 1141, 1630, 1964, 2282, 2455, 3260, 3437, 4564, 4910, 5705, 6874, 7987, 9820, 11410, 13748, 15974, 17185, 22820, 24059, 31948, 34370, 39935, 48118, 68740, 79870, 80033, 96236, 120295, 159740, 160066, 240590, 320132, 400165, 481180, 560231, 800330, 1120462, 1600660, 2240924, 2801155, 3921617, 5602310, 7843234, 11204620, 15686468, 19608085, 39216170, 78432340]

約数ペア:

[(1, 78432340), (2, 39216170), (4, 19608085), (5, 15686468), (7, 11204620), (10, 7843234), (14, 5602310), (20, 3921617), (28, 2801155), (35, 2240924), (49, 1600660), (70, 1120462), (98, 800330), (140, 560231), (163, 481180), (196, 400165), (245, 320132), (326, 240590), (490, 160066), (491, 159740), (652, 120295), (815, 96236), (980, 80033), (982, 79870), (1141, 68740), (1630, 48118), (1964, 39935), (2282, 34370), (2455, 31948), (3260, 24059), (3437, 22820), (4564, 17185), (4910, 15974), (5705, 13748), (6874, 11410), (7987, 9820)]