21715456

素因数分解:

$2^9\times 7^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1$

素因数の和:181

約数の個数: 80

約数和(自身を含む): 50871744

約数和(自身を除く): 29156288

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 73, 83, 112, 128, 146, 166, 224, 256, 292, 332, 448, 511, 512, 581, 584, 664, 896, 1022, 1162, 1168, 1328, 1792, 2044, 2324, 2336, 2656, 3584, 4088, 4648, 4672, 5312, 6059, 8176, 9296, 9344, 10624, 12118, 16352, 18592, 18688, 21248, 24236, 32704, 37184, 37376, 42413, 42496, 48472, 65408, 74368, 84826, 96944, 130816, 148736, 169652, 193888, 261632, 297472, 339304, 387776, 678608, 775552, 1357216, 1551104, 2714432, 3102208, 5428864, 10857728, 21715456]

約数ペア:

[(1, 21715456), (2, 10857728), (4, 5428864), (7, 3102208), (8, 2714432), (14, 1551104), (16, 1357216), (28, 775552), (32, 678608), (56, 387776), (64, 339304), (73, 297472), (83, 261632), (112, 193888), (128, 169652), (146, 148736), (166, 130816), (224, 96944), (256, 84826), (292, 74368), (332, 65408), (448, 48472), (511, 42496), (512, 42413), (581, 37376), (584, 37184), (664, 32704), (896, 24236), (1022, 21248), (1162, 18688), (1168, 18592), (1328, 16352), (1792, 12118), (2044, 10624), (2324, 9344), (2336, 9296), (2656, 8176), (3584, 6059), (4088, 5312), (4648, 4672)]