1256787440

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1\times {\mathrm{1427}}^1$

素因数の和:1650

約数の個数: 80

約数和(自身を含む): 2980121760

約数和(自身を除く): 1723334320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 109, 202, 218, 404, 436, 505, 545, 808, 872, 1010, 1090, 1427, 1616, 1744, 2020, 2180, 2854, 4040, 4360, 5708, 7135, 8080, 8720, 11009, 11416, 14270, 22018, 22832, 28540, 44036, 55045, 57080, 88072, 110090, 114160, 144127, 155543, 176144, 220180, 288254, 311086, 440360, 576508, 622172, 720635, 777715, 880720, 1153016, 1244344, 1441270, 1555430, 2306032, 2488688, 2882540, 3110860, 5765080, 6221720, 11530160, 12443440, 15709843, 31419686, 62839372, 78549215, 125678744, 157098430, 251357488, 314196860, 628393720, 1256787440]

約数ペア:

[(1, 1256787440), (2, 628393720), (4, 314196860), (5, 251357488), (8, 157098430), (10, 125678744), (16, 78549215), (20, 62839372), (40, 31419686), (80, 15709843), (101, 12443440), (109, 11530160), (202, 6221720), (218, 5765080), (404, 3110860), (436, 2882540), (505, 2488688), (545, 2306032), (808, 1555430), (872, 1441270), (1010, 1244344), (1090, 1153016), (1427, 880720), (1616, 777715), (1744, 720635), (2020, 622172), (2180, 576508), (2854, 440360), (4040, 311086), (4360, 288254), (5708, 220180), (7135, 176144), (8080, 155543), (8720, 144127), (11009, 114160), (11416, 110090), (14270, 88072), (22018, 57080), (22832, 55045), (28540, 44036)]