20198992

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:236

約数の個数: 80

約数和(自身を含む): 46550592

約数和(自身を除く): 26351600

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 34, 43, 44, 68, 86, 88, 136, 157, 172, 176, 187, 272, 314, 344, 374, 473, 628, 688, 731, 748, 946, 1256, 1462, 1496, 1727, 1892, 2512, 2669, 2924, 2992, 3454, 3784, 5338, 5848, 6751, 6908, 7568, 8041, 10676, 11696, 13502, 13816, 16082, 21352, 27004, 27632, 29359, 32164, 42704, 54008, 58718, 64328, 74261, 108016, 114767, 117436, 128656, 148522, 229534, 234872, 297044, 459068, 469744, 594088, 918136, 1188176, 1262437, 1836272, 2524874, 5049748, 10099496, 20198992]

約数ペア:

[(1, 20198992), (2, 10099496), (4, 5049748), (8, 2524874), (11, 1836272), (16, 1262437), (17, 1188176), (22, 918136), (34, 594088), (43, 469744), (44, 459068), (68, 297044), (86, 234872), (88, 229534), (136, 148522), (157, 128656), (172, 117436), (176, 114767), (187, 108016), (272, 74261), (314, 64328), (344, 58718), (374, 54008), (473, 42704), (628, 32164), (688, 29359), (731, 27632), (748, 27004), (946, 21352), (1256, 16082), (1462, 13816), (1496, 13502), (1727, 11696), (1892, 10676), (2512, 8041), (2669, 7568), (2924, 6908), (2992, 6751), (3454, 5848), (3784, 5338)]