20472704

素因数分解:

$2^7\times 7^1\times {\mathrm{73}}^1\times {\mathrm{313}}^1$

素因数の和:407

約数の個数: 64

約数和(自身を含む): 47401440

約数和(自身を除く): 26928736

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 73, 112, 128, 146, 224, 292, 313, 448, 511, 584, 626, 896, 1022, 1168, 1252, 2044, 2191, 2336, 2504, 4088, 4382, 4672, 5008, 8176, 8764, 9344, 10016, 16352, 17528, 20032, 22849, 32704, 35056, 40064, 45698, 65408, 70112, 91396, 140224, 159943, 182792, 280448, 319886, 365584, 639772, 731168, 1279544, 1462336, 2559088, 2924672, 5118176, 10236352, 20472704]

約数ペア:

[(1, 20472704), (2, 10236352), (4, 5118176), (7, 2924672), (8, 2559088), (14, 1462336), (16, 1279544), (28, 731168), (32, 639772), (56, 365584), (64, 319886), (73, 280448), (112, 182792), (128, 159943), (146, 140224), (224, 91396), (292, 70112), (313, 65408), (448, 45698), (511, 40064), (584, 35056), (626, 32704), (896, 22849), (1022, 20032), (1168, 17528), (1252, 16352), (2044, 10016), (2191, 9344), (2336, 8764), (2504, 8176), (4088, 5008), (4382, 4672)]