21309780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{331}}^1$

素因数の和:409

約数の個数: 96

約数和(自身を含む): 63584640

約数和(自身を除く): 42274860

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 29, 30, 37, 58, 60, 74, 87, 111, 116, 145, 148, 174, 185, 222, 290, 331, 348, 370, 435, 444, 555, 580, 662, 740, 870, 993, 1073, 1110, 1324, 1655, 1740, 1986, 2146, 2220, 3219, 3310, 3972, 4292, 4965, 5365, 6438, 6620, 9599, 9930, 10730, 12247, 12876, 16095, 19198, 19860, 21460, 24494, 28797, 32190, 36741, 38396, 47995, 48988, 57594, 61235, 64380, 73482, 95990, 115188, 122470, 143985, 146964, 183705, 191980, 244940, 287970, 355163, 367410, 575940, 710326, 734820, 1065489, 1420652, 1775815, 2130978, 3551630, 4261956, 5327445, 7103260, 10654890, 21309780]

約数ペア:

[(1, 21309780), (2, 10654890), (3, 7103260), (4, 5327445), (5, 4261956), (6, 3551630), (10, 2130978), (12, 1775815), (15, 1420652), (20, 1065489), (29, 734820), (30, 710326), (37, 575940), (58, 367410), (60, 355163), (74, 287970), (87, 244940), (111, 191980), (116, 183705), (145, 146964), (148, 143985), (174, 122470), (185, 115188), (222, 95990), (290, 73482), (331, 64380), (348, 61235), (370, 57594), (435, 48988), (444, 47995), (555, 38396), (580, 36741), (662, 32190), (740, 28797), (870, 24494), (993, 21460), (1073, 19860), (1110, 19198), (1324, 16095), (1655, 12876), (1740, 12247), (1986, 10730), (2146, 9930), (2220, 9599), (3219, 6620), (3310, 6438), (3972, 5365), (4292, 4965)]