21032497120

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1\times {\mathrm{12791}}^1$

素因数の和:13088

約数の個数: 96

約数和(自身を含む): 51061570560

約数和(自身を除く): 30029073440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 239, 344, 430, 478, 688, 860, 956, 1195, 1376, 1720, 1912, 2390, 3440, 3824, 4780, 6880, 7648, 9560, 10277, 12791, 19120, 20554, 25582, 38240, 41108, 51164, 51385, 63955, 82216, 102328, 102770, 127910, 164432, 204656, 205540, 255820, 328864, 409312, 411080, 511640, 550013, 822160, 1023280, 1100026, 1644320, 2046560, 2200052, 2750065, 3057049, 4400104, 5500130, 6114098, 8800208, 11000260, 12228196, 15285245, 17600416, 22000520, 24456392, 30570490, 44001040, 48912784, 61140980, 88002080, 97825568, 122281960, 131453107, 244563920, 262906214, 489127840, 525812428, 657265535, 1051624856, 1314531070, 2103249712, 2629062140, 4206499424, 5258124280, 10516248560, 21032497120]

約数ペア:

[(1, 21032497120), (2, 10516248560), (4, 5258124280), (5, 4206499424), (8, 2629062140), (10, 2103249712), (16, 1314531070), (20, 1051624856), (32, 657265535), (40, 525812428), (43, 489127840), (80, 262906214), (86, 244563920), (160, 131453107), (172, 122281960), (215, 97825568), (239, 88002080), (344, 61140980), (430, 48912784), (478, 44001040), (688, 30570490), (860, 24456392), (956, 22000520), (1195, 17600416), (1376, 15285245), (1720, 12228196), (1912, 11000260), (2390, 8800208), (3440, 6114098), (3824, 5500130), (4780, 4400104), (6880, 3057049), (7648, 2750065), (9560, 2200052), (10277, 2046560), (12791, 1644320), (19120, 1100026), (20554, 1023280), (25582, 822160), (38240, 550013), (41108, 511640), (51164, 411080), (51385, 409312), (63955, 328864), (82216, 255820), (102328, 205540), (102770, 204656), (127910, 164432)]