351983920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1999}}^1$

素因数の和:2114

約数の個数: 80

約数和(自身を含む): 857088000

約数和(自身を除く): 505104080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 71, 80, 124, 142, 155, 248, 284, 310, 355, 496, 568, 620, 710, 1136, 1240, 1420, 1999, 2201, 2480, 2840, 3998, 4402, 5680, 7996, 8804, 9995, 11005, 15992, 17608, 19990, 22010, 31984, 35216, 39980, 44020, 61969, 79960, 88040, 123938, 141929, 159920, 176080, 247876, 283858, 309845, 495752, 567716, 619690, 709645, 991504, 1135432, 1239380, 1419290, 2270864, 2478760, 2838580, 4399799, 4957520, 5677160, 8799598, 11354320, 17599196, 21998995, 35198392, 43997990, 70396784, 87995980, 175991960, 351983920]

約数ペア:

[(1, 351983920), (2, 175991960), (4, 87995980), (5, 70396784), (8, 43997990), (10, 35198392), (16, 21998995), (20, 17599196), (31, 11354320), (40, 8799598), (62, 5677160), (71, 4957520), (80, 4399799), (124, 2838580), (142, 2478760), (155, 2270864), (248, 1419290), (284, 1239380), (310, 1135432), (355, 991504), (496, 709645), (568, 619690), (620, 567716), (710, 495752), (1136, 309845), (1240, 283858), (1420, 247876), (1999, 176080), (2201, 159920), (2480, 141929), (2840, 123938), (3998, 88040), (4402, 79960), (5680, 61969), (7996, 44020), (8804, 39980), (9995, 35216), (11005, 31984), (15992, 22010), (17608, 19990)]