21869456

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1$

素因数の和:316

約数の個数: 80

約数和(自身を含む): 52377600

約数和(自身を除く): 30508144

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 43, 56, 76, 86, 112, 133, 152, 172, 239, 266, 301, 304, 344, 478, 532, 602, 688, 817, 956, 1064, 1204, 1634, 1673, 1912, 2128, 2408, 3268, 3346, 3824, 4541, 4816, 5719, 6536, 6692, 9082, 10277, 11438, 13072, 13384, 18164, 20554, 22876, 26768, 31787, 36328, 41108, 45752, 63574, 71939, 72656, 82216, 91504, 127148, 143878, 164432, 195263, 254296, 287756, 390526, 508592, 575512, 781052, 1151024, 1366841, 1562104, 2733682, 3124208, 5467364, 10934728, 21869456]

約数ペア:

[(1, 21869456), (2, 10934728), (4, 5467364), (7, 3124208), (8, 2733682), (14, 1562104), (16, 1366841), (19, 1151024), (28, 781052), (38, 575512), (43, 508592), (56, 390526), (76, 287756), (86, 254296), (112, 195263), (133, 164432), (152, 143878), (172, 127148), (239, 91504), (266, 82216), (301, 72656), (304, 71939), (344, 63574), (478, 45752), (532, 41108), (602, 36328), (688, 31787), (817, 26768), (956, 22876), (1064, 20554), (1204, 18164), (1634, 13384), (1673, 13072), (1912, 11438), (2128, 10277), (2408, 9082), (3268, 6692), (3346, 6536), (3824, 5719), (4541, 4816)]