21057750

素因数分解:

$2^1\times 3^2\times 5^3\times 7^2\times {\mathrm{191}}^1$

素因数の和:228

約数の個数: 144

約数和(自身を含む): 66583296

約数和(自身を除く): 45525546

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 25, 30, 35, 42, 45, 49, 50, 63, 70, 75, 90, 98, 105, 125, 126, 147, 150, 175, 191, 210, 225, 245, 250, 294, 315, 350, 375, 382, 441, 450, 490, 525, 573, 630, 735, 750, 875, 882, 955, 1050, 1125, 1146, 1225, 1337, 1470, 1575, 1719, 1750, 1910, 2205, 2250, 2450, 2625, 2674, 2865, 3150, 3438, 3675, 4011, 4410, 4775, 5250, 5730, 6125, 6685, 7350, 7875, 8022, 8595, 9359, 9550, 11025, 12033, 12250, 13370, 14325, 15750, 17190, 18375, 18718, 20055, 22050, 23875, 24066, 28077, 28650, 33425, 36750, 40110, 42975, 46795, 47750, 55125, 56154, 60165, 66850, 71625, 84231, 85950, 93590, 100275, 110250, 120330, 140385, 143250, 167125, 168462, 200550, 214875, 233975, 280770, 300825, 334250, 421155, 429750, 467950, 501375, 601650, 701925, 842310, 1002750, 1169875, 1403850, 1504125, 2105775, 2339750, 3008250, 3509625, 4211550, 7019250, 10528875, 21057750]

約数ペア:

[(1, 21057750), (2, 10528875), (3, 7019250), (5, 4211550), (6, 3509625), (7, 3008250), (9, 2339750), (10, 2105775), (14, 1504125), (15, 1403850), (18, 1169875), (21, 1002750), (25, 842310), (30, 701925), (35, 601650), (42, 501375), (45, 467950), (49, 429750), (50, 421155), (63, 334250), (70, 300825), (75, 280770), (90, 233975), (98, 214875), (105, 200550), (125, 168462), (126, 167125), (147, 143250), (150, 140385), (175, 120330), (191, 110250), (210, 100275), (225, 93590), (245, 85950), (250, 84231), (294, 71625), (315, 66850), (350, 60165), (375, 56154), (382, 55125), (441, 47750), (450, 46795), (490, 42975), (525, 40110), (573, 36750), (630, 33425), (735, 28650), (750, 28077), (875, 24066), (882, 23875), (955, 22050), (1050, 20055), (1125, 18718), (1146, 18375), (1225, 17190), (1337, 15750), (1470, 14325), (1575, 13370), (1719, 12250), (1750, 12033), (1910, 11025), (2205, 9550), (2250, 9359), (2450, 8595), (2625, 8022), (2674, 7875), (2865, 7350), (3150, 6685), (3438, 6125), (3675, 5730), (4011, 5250), (4410, 4775)]