640990560

素因数分解:

$2^5\times 3^1\times 5^1\times 7^2\times {\mathrm{27253}}^1$

素因数の和:27285

約数の個数: 144

約数和(自身を含む): 2348858736

約数和(自身を除く): 1707868176

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 96, 98, 105, 112, 120, 140, 147, 160, 168, 196, 210, 224, 240, 245, 280, 294, 336, 392, 420, 480, 490, 560, 588, 672, 735, 784, 840, 980, 1120, 1176, 1470, 1568, 1680, 1960, 2352, 2940, 3360, 3920, 4704, 5880, 7840, 11760, 23520, 27253, 54506, 81759, 109012, 136265, 163518, 190771, 218024, 272530, 327036, 381542, 408795, 436048, 545060, 572313, 654072, 763084, 817590, 872096, 953855, 1090120, 1144626, 1308144, 1335397, 1526168, 1635180, 1907710, 2180240, 2289252, 2616288, 2670794, 2861565, 3052336, 3270360, 3815420, 4006191, 4360480, 4578504, 5341588, 5723130, 6104672, 6540720, 6676985, 7630840, 8012382, 9157008, 10683176, 11446260, 13081440, 13353970, 15261680, 16024764, 18314016, 20030955, 21366352, 22892520, 26707940, 30523360, 32049528, 40061910, 42732704, 45785040, 53415880, 64099056, 80123820, 91570080, 106831760, 128198112, 160247640, 213663520, 320495280, 640990560]

約数ペア:

[(1, 640990560), (2, 320495280), (3, 213663520), (4, 160247640), (5, 128198112), (6, 106831760), (7, 91570080), (8, 80123820), (10, 64099056), (12, 53415880), (14, 45785040), (15, 42732704), (16, 40061910), (20, 32049528), (21, 30523360), (24, 26707940), (28, 22892520), (30, 21366352), (32, 20030955), (35, 18314016), (40, 16024764), (42, 15261680), (48, 13353970), (49, 13081440), (56, 11446260), (60, 10683176), (70, 9157008), (80, 8012382), (84, 7630840), (96, 6676985), (98, 6540720), (105, 6104672), (112, 5723130), (120, 5341588), (140, 4578504), (147, 4360480), (160, 4006191), (168, 3815420), (196, 3270360), (210, 3052336), (224, 2861565), (240, 2670794), (245, 2616288), (280, 2289252), (294, 2180240), (336, 1907710), (392, 1635180), (420, 1526168), (480, 1335397), (490, 1308144), (560, 1144626), (588, 1090120), (672, 953855), (735, 872096), (784, 817590), (840, 763084), (980, 654072), (1120, 572313), (1176, 545060), (1470, 436048), (1568, 408795), (1680, 381542), (1960, 327036), (2352, 272530), (2940, 218024), (3360, 190771), (3920, 163518), (4704, 136265), (5880, 109012), (7840, 81759), (11760, 54506), (23520, 27253)]