20341888

素因数分解:

$2^7\times 7^1\times {\mathrm{73}}^1\times {\mathrm{311}}^1$

素因数の和:405

約数の個数: 64

約数和(自身を含む): 47099520

約数和(自身を除く): 26757632

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 73, 112, 128, 146, 224, 292, 311, 448, 511, 584, 622, 896, 1022, 1168, 1244, 2044, 2177, 2336, 2488, 4088, 4354, 4672, 4976, 8176, 8708, 9344, 9952, 16352, 17416, 19904, 22703, 32704, 34832, 39808, 45406, 65408, 69664, 90812, 139328, 158921, 181624, 278656, 317842, 363248, 635684, 726496, 1271368, 1452992, 2542736, 2905984, 5085472, 10170944, 20341888]

約数ペア:

[(1, 20341888), (2, 10170944), (4, 5085472), (7, 2905984), (8, 2542736), (14, 1452992), (16, 1271368), (28, 726496), (32, 635684), (56, 363248), (64, 317842), (73, 278656), (112, 181624), (128, 158921), (146, 139328), (224, 90812), (292, 69664), (311, 65408), (448, 45406), (511, 39808), (584, 34832), (622, 32704), (896, 22703), (1022, 19904), (1168, 17416), (1244, 16352), (2044, 9952), (2177, 9344), (2336, 8708), (2488, 8176), (4088, 4976), (4354, 4672)]