18642736

素因数分解:

$2^4\times 7^3\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:151

約数の個数: 80

約数和(自身を含む): 43648000

約数和(自身を除く): 25005264

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 43, 49, 56, 79, 86, 98, 112, 158, 172, 196, 301, 316, 343, 344, 392, 553, 602, 632, 686, 688, 784, 1106, 1204, 1264, 1372, 2107, 2212, 2408, 2744, 3397, 3871, 4214, 4424, 4816, 5488, 6794, 7742, 8428, 8848, 13588, 14749, 15484, 16856, 23779, 27097, 27176, 29498, 30968, 33712, 47558, 54194, 54352, 58996, 61936, 95116, 108388, 117992, 166453, 190232, 216776, 235984, 332906, 380464, 433552, 665812, 1165171, 1331624, 2330342, 2663248, 4660684, 9321368, 18642736]

約数ペア:

[(1, 18642736), (2, 9321368), (4, 4660684), (7, 2663248), (8, 2330342), (14, 1331624), (16, 1165171), (28, 665812), (43, 433552), (49, 380464), (56, 332906), (79, 235984), (86, 216776), (98, 190232), (112, 166453), (158, 117992), (172, 108388), (196, 95116), (301, 61936), (316, 58996), (343, 54352), (344, 54194), (392, 47558), (553, 33712), (602, 30968), (632, 29498), (686, 27176), (688, 27097), (784, 23779), (1106, 16856), (1204, 15484), (1264, 14749), (1372, 13588), (2107, 8848), (2212, 8428), (2408, 7742), (2744, 6794), (3397, 5488), (3871, 4816), (4214, 4424)]