21423906

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{19}}^2\times {\mathrm{157}}^1$

素因数の和:213

約数の個数: 96

約数和(自身を含む): 57790080

約数和(自身を除く): 36366174

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 19, 21, 27, 38, 42, 54, 57, 63, 114, 126, 133, 157, 171, 189, 266, 314, 342, 361, 378, 399, 471, 513, 722, 798, 942, 1026, 1083, 1099, 1197, 1413, 2166, 2198, 2394, 2527, 2826, 2983, 3249, 3297, 3591, 4239, 5054, 5966, 6498, 6594, 7182, 7581, 8478, 8949, 9747, 9891, 15162, 17898, 19494, 19782, 20881, 22743, 26847, 29673, 41762, 45486, 53694, 56677, 59346, 62643, 68229, 80541, 113354, 125286, 136458, 161082, 170031, 187929, 340062, 375858, 396739, 510093, 563787, 793478, 1020186, 1127574, 1190217, 1530279, 2380434, 3060558, 3570651, 7141302, 10711953, 21423906]

約数ペア:

[(1, 21423906), (2, 10711953), (3, 7141302), (6, 3570651), (7, 3060558), (9, 2380434), (14, 1530279), (18, 1190217), (19, 1127574), (21, 1020186), (27, 793478), (38, 563787), (42, 510093), (54, 396739), (57, 375858), (63, 340062), (114, 187929), (126, 170031), (133, 161082), (157, 136458), (171, 125286), (189, 113354), (266, 80541), (314, 68229), (342, 62643), (361, 59346), (378, 56677), (399, 53694), (471, 45486), (513, 41762), (722, 29673), (798, 26847), (942, 22743), (1026, 20881), (1083, 19782), (1099, 19494), (1197, 17898), (1413, 15162), (2166, 9891), (2198, 9747), (2394, 8949), (2527, 8478), (2826, 7581), (2983, 7182), (3249, 6594), (3297, 6498), (3591, 5966), (4239, 5054)]