21398472

素因数分解:

$2^3\times 3^3\times {\mathrm{157}}^1\times {\mathrm{631}}^1$

素因数の和:803

約数の個数: 64

約数和(自身を含む): 59913600

約数和(自身を除く): 38515128

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 108, 157, 216, 314, 471, 628, 631, 942, 1256, 1262, 1413, 1884, 1893, 2524, 2826, 3768, 3786, 4239, 5048, 5652, 5679, 7572, 8478, 11304, 11358, 15144, 16956, 17037, 22716, 33912, 34074, 45432, 68148, 99067, 136296, 198134, 297201, 396268, 594402, 792536, 891603, 1188804, 1783206, 2377608, 2674809, 3566412, 5349618, 7132824, 10699236, 21398472]

約数ペア:

[(1, 21398472), (2, 10699236), (3, 7132824), (4, 5349618), (6, 3566412), (8, 2674809), (9, 2377608), (12, 1783206), (18, 1188804), (24, 891603), (27, 792536), (36, 594402), (54, 396268), (72, 297201), (108, 198134), (157, 136296), (216, 99067), (314, 68148), (471, 45432), (628, 34074), (631, 33912), (942, 22716), (1256, 17037), (1262, 16956), (1413, 15144), (1884, 11358), (1893, 11304), (2524, 8478), (2826, 7572), (3768, 5679), (3786, 5652), (4239, 5048)]