21401248

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{373}}^1$

素因数の和:557

約数の個数: 48

約数和(自身を含む): 46370016

約数和(自身を除く): 24968768

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 163, 176, 326, 352, 373, 652, 746, 1304, 1492, 1793, 2608, 2984, 3586, 4103, 5216, 5968, 7172, 8206, 11936, 14344, 16412, 28688, 32824, 57376, 60799, 65648, 121598, 131296, 243196, 486392, 668789, 972784, 1337578, 1945568, 2675156, 5350312, 10700624, 21401248]

約数ペア:

[(1, 21401248), (2, 10700624), (4, 5350312), (8, 2675156), (11, 1945568), (16, 1337578), (22, 972784), (32, 668789), (44, 486392), (88, 243196), (163, 131296), (176, 121598), (326, 65648), (352, 60799), (373, 57376), (652, 32824), (746, 28688), (1304, 16412), (1492, 14344), (1793, 11936), (2608, 8206), (2984, 7172), (3586, 5968), (4103, 5216)]