128880040

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:227

約数の個数: 128

約数和(自身を含む): 326073600

約数和(自身を除く): 197193560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 23, 38, 40, 46, 73, 76, 92, 95, 101, 115, 146, 152, 184, 190, 202, 230, 292, 365, 380, 404, 437, 460, 505, 584, 730, 760, 808, 874, 920, 1010, 1387, 1460, 1679, 1748, 1919, 2020, 2185, 2323, 2774, 2920, 3358, 3496, 3838, 4040, 4370, 4646, 5548, 6716, 6935, 7373, 7676, 8395, 8740, 9292, 9595, 11096, 11615, 13432, 13870, 14746, 15352, 16790, 17480, 18584, 19190, 23230, 27740, 29492, 31901, 33580, 36865, 38380, 44137, 46460, 55480, 58984, 63802, 67160, 73730, 76760, 88274, 92920, 127604, 140087, 147460, 159505, 169579, 176548, 220685, 255208, 280174, 294920, 319010, 339158, 353096, 441370, 560348, 638020, 678316, 700435, 847895, 882740, 1120696, 1276040, 1356632, 1400870, 1695790, 1765480, 2801740, 3222001, 3391580, 5603480, 6444002, 6783160, 12888004, 16110005, 25776008, 32220010, 64440020, 128880040]

約数ペア:

[(1, 128880040), (2, 64440020), (4, 32220010), (5, 25776008), (8, 16110005), (10, 12888004), (19, 6783160), (20, 6444002), (23, 5603480), (38, 3391580), (40, 3222001), (46, 2801740), (73, 1765480), (76, 1695790), (92, 1400870), (95, 1356632), (101, 1276040), (115, 1120696), (146, 882740), (152, 847895), (184, 700435), (190, 678316), (202, 638020), (230, 560348), (292, 441370), (365, 353096), (380, 339158), (404, 319010), (437, 294920), (460, 280174), (505, 255208), (584, 220685), (730, 176548), (760, 169579), (808, 159505), (874, 147460), (920, 140087), (1010, 127604), (1387, 92920), (1460, 88274), (1679, 76760), (1748, 73730), (1919, 67160), (2020, 63802), (2185, 58984), (2323, 55480), (2774, 46460), (2920, 44137), (3358, 38380), (3496, 36865), (3838, 33580), (4040, 31901), (4370, 29492), (4646, 27740), (5548, 23230), (6716, 19190), (6935, 18584), (7373, 17480), (7676, 16790), (8395, 15352), (8740, 14746), (9292, 13870), (9595, 13432), (11096, 11615)]