21143700

素因数分解:

$2^2\times 3^3\times 5^2\times {\mathrm{41}}^1\times {\mathrm{191}}^1$

素因数の和:255

約数の個数: 144

約数和(自身を含む): 69995520

約数和(自身を除く): 48851820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 41, 45, 50, 54, 60, 75, 82, 90, 100, 108, 123, 135, 150, 164, 180, 191, 205, 225, 246, 270, 300, 369, 382, 410, 450, 492, 540, 573, 615, 675, 738, 764, 820, 900, 955, 1025, 1107, 1146, 1230, 1350, 1476, 1719, 1845, 1910, 2050, 2214, 2292, 2460, 2700, 2865, 3075, 3438, 3690, 3820, 4100, 4428, 4775, 5157, 5535, 5730, 6150, 6876, 7380, 7831, 8595, 9225, 9550, 10314, 11070, 11460, 12300, 14325, 15662, 17190, 18450, 19100, 20628, 22140, 23493, 25785, 27675, 28650, 31324, 34380, 36900, 39155, 42975, 46986, 51570, 55350, 57300, 70479, 78310, 85950, 93972, 103140, 110700, 117465, 128925, 140958, 156620, 171900, 195775, 211437, 234930, 257850, 281916, 352395, 391550, 422874, 469860, 515700, 587325, 704790, 783100, 845748, 1057185, 1174650, 1409580, 1761975, 2114370, 2349300, 3523950, 4228740, 5285925, 7047900, 10571850, 21143700]

約数ペア:

[(1, 21143700), (2, 10571850), (3, 7047900), (4, 5285925), (5, 4228740), (6, 3523950), (9, 2349300), (10, 2114370), (12, 1761975), (15, 1409580), (18, 1174650), (20, 1057185), (25, 845748), (27, 783100), (30, 704790), (36, 587325), (41, 515700), (45, 469860), (50, 422874), (54, 391550), (60, 352395), (75, 281916), (82, 257850), (90, 234930), (100, 211437), (108, 195775), (123, 171900), (135, 156620), (150, 140958), (164, 128925), (180, 117465), (191, 110700), (205, 103140), (225, 93972), (246, 85950), (270, 78310), (300, 70479), (369, 57300), (382, 55350), (410, 51570), (450, 46986), (492, 42975), (540, 39155), (573, 36900), (615, 34380), (675, 31324), (738, 28650), (764, 27675), (820, 25785), (900, 23493), (955, 22140), (1025, 20628), (1107, 19100), (1146, 18450), (1230, 17190), (1350, 15662), (1476, 14325), (1719, 12300), (1845, 11460), (1910, 11070), (2050, 10314), (2214, 9550), (2292, 9225), (2460, 8595), (2700, 7831), (2865, 7380), (3075, 6876), (3438, 6150), (3690, 5730), (3820, 5535), (4100, 5157), (4428, 4775)]