21087888

素因数分解:

$2^4\times 3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{601}}^1$

素因数の和:672

約数の個数: 80

約数和(自身を含む): 59121216

約数和(自身を除く): 38033328

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 43, 48, 51, 68, 86, 102, 129, 136, 172, 204, 258, 272, 344, 408, 516, 601, 688, 731, 816, 1032, 1202, 1462, 1803, 2064, 2193, 2404, 2924, 3606, 4386, 4808, 5848, 7212, 8772, 9616, 10217, 11696, 14424, 17544, 20434, 25843, 28848, 30651, 35088, 40868, 51686, 61302, 77529, 81736, 103372, 122604, 155058, 163472, 206744, 245208, 310116, 413488, 439331, 490416, 620232, 878662, 1240464, 1317993, 1757324, 2635986, 3514648, 5271972, 7029296, 10543944, 21087888]

約数ペア:

[(1, 21087888), (2, 10543944), (3, 7029296), (4, 5271972), (6, 3514648), (8, 2635986), (12, 1757324), (16, 1317993), (17, 1240464), (24, 878662), (34, 620232), (43, 490416), (48, 439331), (51, 413488), (68, 310116), (86, 245208), (102, 206744), (129, 163472), (136, 155058), (172, 122604), (204, 103372), (258, 81736), (272, 77529), (344, 61302), (408, 51686), (516, 40868), (601, 35088), (688, 30651), (731, 28848), (816, 25843), (1032, 20434), (1202, 17544), (1462, 14424), (1803, 11696), (2064, 10217), (2193, 9616), (2404, 8772), (2924, 7212), (3606, 5848), (4386, 4808)]