221529560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{839}}^1$

素因数の和:921

約数の個数: 128

約数和(自身を含む): 609638400

約数和(自身を除く): 388108840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 41, 46, 56, 70, 82, 92, 115, 140, 161, 164, 184, 205, 230, 280, 287, 322, 328, 410, 460, 574, 644, 805, 820, 839, 920, 943, 1148, 1288, 1435, 1610, 1640, 1678, 1886, 2296, 2870, 3220, 3356, 3772, 4195, 4715, 5740, 5873, 6440, 6601, 6712, 7544, 8390, 9430, 11480, 11746, 13202, 16780, 18860, 19297, 23492, 26404, 29365, 33005, 33560, 34399, 37720, 38594, 46984, 52808, 58730, 66010, 68798, 77188, 96485, 117460, 132020, 135079, 137596, 154376, 171995, 192970, 234920, 240793, 264040, 270158, 275192, 343990, 385940, 481586, 540316, 675395, 687980, 771880, 791177, 963172, 1080632, 1203965, 1350790, 1375960, 1582354, 1926344, 2407930, 2701580, 3164708, 3955885, 4815860, 5403160, 5538239, 6329416, 7911770, 9631720, 11076478, 15823540, 22152956, 27691195, 31647080, 44305912, 55382390, 110764780, 221529560]

約数ペア:

[(1, 221529560), (2, 110764780), (4, 55382390), (5, 44305912), (7, 31647080), (8, 27691195), (10, 22152956), (14, 15823540), (20, 11076478), (23, 9631720), (28, 7911770), (35, 6329416), (40, 5538239), (41, 5403160), (46, 4815860), (56, 3955885), (70, 3164708), (82, 2701580), (92, 2407930), (115, 1926344), (140, 1582354), (161, 1375960), (164, 1350790), (184, 1203965), (205, 1080632), (230, 963172), (280, 791177), (287, 771880), (322, 687980), (328, 675395), (410, 540316), (460, 481586), (574, 385940), (644, 343990), (805, 275192), (820, 270158), (839, 264040), (920, 240793), (943, 234920), (1148, 192970), (1288, 171995), (1435, 154376), (1610, 137596), (1640, 135079), (1678, 132020), (1886, 117460), (2296, 96485), (2870, 77188), (3220, 68798), (3356, 66010), (3772, 58730), (4195, 52808), (4715, 46984), (5740, 38594), (5873, 37720), (6440, 34399), (6601, 33560), (6712, 33005), (7544, 29365), (8390, 26404), (9430, 23492), (11480, 19297), (11746, 18860), (13202, 16780)]