20641740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^3\times {\mathrm{17}}^1\times {\mathrm{59}}^1$

素因数の和:109

約数の個数: 192

約数和(自身を含む): 72576000

約数和(自身を除く): 51934260

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 20, 21, 28, 30, 34, 35, 42, 49, 51, 59, 60, 68, 70, 84, 85, 98, 102, 105, 118, 119, 140, 147, 170, 177, 196, 204, 210, 236, 238, 245, 255, 294, 295, 340, 343, 354, 357, 413, 420, 476, 490, 510, 588, 590, 595, 686, 708, 714, 735, 826, 833, 885, 980, 1003, 1020, 1029, 1180, 1190, 1239, 1372, 1428, 1470, 1652, 1666, 1715, 1770, 1785, 2006, 2058, 2065, 2380, 2478, 2499, 2891, 2940, 3009, 3332, 3430, 3540, 3570, 4012, 4116, 4130, 4165, 4956, 4998, 5015, 5145, 5782, 5831, 6018, 6195, 6860, 7021, 7140, 8260, 8330, 8673, 9996, 10030, 10290, 11564, 11662, 12036, 12390, 12495, 14042, 14455, 15045, 16660, 17346, 17493, 20060, 20237, 20580, 21063, 23324, 24780, 24990, 28084, 28910, 29155, 30090, 34692, 34986, 35105, 40474, 42126, 43365, 49147, 49980, 57820, 58310, 60180, 60711, 69972, 70210, 80948, 84252, 86730, 87465, 98294, 101185, 105315, 116620, 121422, 140420, 147441, 173460, 174930, 196588, 202370, 210630, 242844, 245735, 294882, 303555, 344029, 349860, 404740, 421260, 491470, 589764, 607110, 688058, 737205, 982940, 1032087, 1214220, 1376116, 1474410, 1720145, 2064174, 2948820, 3440290, 4128348, 5160435, 6880580, 10320870, 20641740]

約数ペア:

[(1, 20641740), (2, 10320870), (3, 6880580), (4, 5160435), (5, 4128348), (6, 3440290), (7, 2948820), (10, 2064174), (12, 1720145), (14, 1474410), (15, 1376116), (17, 1214220), (20, 1032087), (21, 982940), (28, 737205), (30, 688058), (34, 607110), (35, 589764), (42, 491470), (49, 421260), (51, 404740), (59, 349860), (60, 344029), (68, 303555), (70, 294882), (84, 245735), (85, 242844), (98, 210630), (102, 202370), (105, 196588), (118, 174930), (119, 173460), (140, 147441), (147, 140420), (170, 121422), (177, 116620), (196, 105315), (204, 101185), (210, 98294), (236, 87465), (238, 86730), (245, 84252), (255, 80948), (294, 70210), (295, 69972), (340, 60711), (343, 60180), (354, 58310), (357, 57820), (413, 49980), (420, 49147), (476, 43365), (490, 42126), (510, 40474), (588, 35105), (590, 34986), (595, 34692), (686, 30090), (708, 29155), (714, 28910), (735, 28084), (826, 24990), (833, 24780), (885, 23324), (980, 21063), (1003, 20580), (1020, 20237), (1029, 20060), (1180, 17493), (1190, 17346), (1239, 16660), (1372, 15045), (1428, 14455), (1470, 14042), (1652, 12495), (1666, 12390), (1715, 12036), (1770, 11662), (1785, 11564), (2006, 10290), (2058, 10030), (2065, 9996), (2380, 8673), (2478, 8330), (2499, 8260), (2891, 7140), (2940, 7021), (3009, 6860), (3332, 6195), (3430, 6018), (3540, 5831), (3570, 5782), (4012, 5145), (4116, 5015), (4130, 4998), (4165, 4956)]