80559700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1999}}^1$

素因数の和:2057

約数の個数: 72

約数和(自身を含む): 194432000

約数和(自身を除く): 113872300

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 31, 50, 52, 62, 65, 100, 124, 130, 155, 260, 310, 325, 403, 620, 650, 775, 806, 1300, 1550, 1612, 1999, 2015, 3100, 3998, 4030, 7996, 8060, 9995, 10075, 19990, 20150, 25987, 39980, 40300, 49975, 51974, 61969, 99950, 103948, 123938, 129935, 199900, 247876, 259870, 309845, 519740, 619690, 649675, 805597, 1239380, 1299350, 1549225, 1611194, 2598700, 3098450, 3222388, 4027985, 6196900, 8055970, 16111940, 20139925, 40279850, 80559700]

約数ペア:

[(1, 80559700), (2, 40279850), (4, 20139925), (5, 16111940), (10, 8055970), (13, 6196900), (20, 4027985), (25, 3222388), (26, 3098450), (31, 2598700), (50, 1611194), (52, 1549225), (62, 1299350), (65, 1239380), (100, 805597), (124, 649675), (130, 619690), (155, 519740), (260, 309845), (310, 259870), (325, 247876), (403, 199900), (620, 129935), (650, 123938), (775, 103948), (806, 99950), (1300, 61969), (1550, 51974), (1612, 49975), (1999, 40300), (2015, 39980), (3100, 25987), (3998, 20150), (4030, 19990), (7996, 10075), (8060, 9995)]