21650048

素因数分解:

$2^7\times 7^1\times {\mathrm{73}}^1\times {\mathrm{331}}^1$

素因数の和:425

約数の個数: 64

約数和(自身を含む): 50118720

約数和(自身を除く): 28468672

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 73, 112, 128, 146, 224, 292, 331, 448, 511, 584, 662, 896, 1022, 1168, 1324, 2044, 2317, 2336, 2648, 4088, 4634, 4672, 5296, 8176, 9268, 9344, 10592, 16352, 18536, 21184, 24163, 32704, 37072, 42368, 48326, 65408, 74144, 96652, 148288, 169141, 193304, 296576, 338282, 386608, 676564, 773216, 1353128, 1546432, 2706256, 3092864, 5412512, 10825024, 21650048]

約数ペア:

[(1, 21650048), (2, 10825024), (4, 5412512), (7, 3092864), (8, 2706256), (14, 1546432), (16, 1353128), (28, 773216), (32, 676564), (56, 386608), (64, 338282), (73, 296576), (112, 193304), (128, 169141), (146, 148288), (224, 96652), (292, 74144), (331, 65408), (448, 48326), (511, 42368), (584, 37072), (662, 32704), (896, 24163), (1022, 21184), (1168, 18536), (1324, 16352), (2044, 10592), (2317, 9344), (2336, 9268), (2648, 8176), (4088, 5296), (4634, 4672)]