20390944

素因数分解:

$2^5\times 7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:162

約数の個数: 96

約数和(自身を含む): 49230720

約数和(自身を除く): 28839776

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 32, 43, 56, 58, 73, 86, 112, 116, 146, 172, 203, 224, 232, 292, 301, 344, 406, 464, 511, 584, 602, 688, 812, 928, 1022, 1168, 1204, 1247, 1376, 1624, 2044, 2117, 2336, 2408, 2494, 3139, 3248, 4088, 4234, 4816, 4988, 6278, 6496, 8176, 8468, 8729, 9632, 9976, 12556, 14819, 16352, 16936, 17458, 19952, 21973, 25112, 29638, 33872, 34916, 39904, 43946, 50224, 59276, 67744, 69832, 87892, 91031, 100448, 118552, 139664, 175784, 182062, 237104, 279328, 351568, 364124, 474208, 637217, 703136, 728248, 1274434, 1456496, 2548868, 2912992, 5097736, 10195472, 20390944]

約数ペア:

[(1, 20390944), (2, 10195472), (4, 5097736), (7, 2912992), (8, 2548868), (14, 1456496), (16, 1274434), (28, 728248), (29, 703136), (32, 637217), (43, 474208), (56, 364124), (58, 351568), (73, 279328), (86, 237104), (112, 182062), (116, 175784), (146, 139664), (172, 118552), (203, 100448), (224, 91031), (232, 87892), (292, 69832), (301, 67744), (344, 59276), (406, 50224), (464, 43946), (511, 39904), (584, 34916), (602, 33872), (688, 29638), (812, 25112), (928, 21973), (1022, 19952), (1168, 17458), (1204, 16936), (1247, 16352), (1376, 14819), (1624, 12556), (2044, 9976), (2117, 9632), (2336, 8729), (2408, 8468), (2494, 8176), (3139, 6496), (3248, 6278), (4088, 4988), (4234, 4816)]