21756368

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{1213}}^1$

素因数の和:1299

約数の個数: 40

約数和(自身を含む): 45160800

約数和(自身を除く): 23404432

約数列:

[1, 2, 4, 8, 16, 19, 38, 59, 76, 118, 152, 236, 304, 472, 944, 1121, 1213, 2242, 2426, 4484, 4852, 8968, 9704, 17936, 19408, 23047, 46094, 71567, 92188, 143134, 184376, 286268, 368752, 572536, 1145072, 1359773, 2719546, 5439092, 10878184, 21756368]

約数ペア:

[(1, 21756368), (2, 10878184), (4, 5439092), (8, 2719546), (16, 1359773), (19, 1145072), (38, 572536), (59, 368752), (76, 286268), (118, 184376), (152, 143134), (236, 92188), (304, 71567), (472, 46094), (944, 23047), (1121, 19408), (1213, 17936), (2242, 9704), (2426, 8968), (4484, 4852)]