About the Number

1997701380

1997701379 ← → 1997701381

2進数表記:1110111000100101000000100000100

漢数字表記:十九億九千七百七十万千三百八十

素因数分解:

2 2 × 3 4 × 5 1 × 31 1 × 39779 1

素因数の和:39831
約数の個数: 120
約数和(自身を含む): 6469182720
約数和(自身を除く): 4471481340

約数列:
[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 31, 36, 45, 54, 60, 62, 81, 90, 93, 108, 124, 135, 155, 162, 180, 186, 270, 279, 310, 324, 372, 405, 465, 540, 558, 620, 810, 837, 930, 1116, 1395, 1620, 1674, 1860, 2511, 2790, 3348, 4185, 5022, 5580, 8370, 10044, 12555, 16740, 25110, 39779, 50220, 79558, 119337, 159116, 198895, 238674, 358011, 397790, 477348, 596685, 716022, 795580, 1074033, 1193370, 1233149, 1432044, 1790055, 2148066, 2386740, 2466298, 3222099, 3580110, 3699447, 4296132, 4932596, 5370165, 6165745, 6444198, 7160220, 7398894, 10740330, 11098341, 12331490, 12888396, 14797788, 16110495, 18497235, 21480660, 22196682, 24662980, 32220990, 33295023, 36994470, 44393364, 55491705, 64441980, 66590046, 73988940, 99885069, 110983410, 133180092, 166475115, 199770138, 221966820, 332950230, 399540276, 499425345, 665900460, 998850690, 1997701380]

約数ペア:
[(1, 1997701380), (2, 998850690), (3, 665900460), (4, 499425345), (5, 399540276), (6, 332950230), (9, 221966820), (10, 199770138), (12, 166475115), (15, 133180092), (18, 110983410), (20, 99885069), (27, 73988940), (30, 66590046), (31, 64441980), (36, 55491705), (45, 44393364), (54, 36994470), (60, 33295023), (62, 32220990), (81, 24662980), (90, 22196682), (93, 21480660), (108, 18497235), (124, 16110495), (135, 14797788), (155, 12888396), (162, 12331490), (180, 11098341), (186, 10740330), (270, 7398894), (279, 7160220), (310, 6444198), (324, 6165745), (372, 5370165), (405, 4932596), (465, 4296132), (540, 3699447), (558, 3580110), (620, 3222099), (810, 2466298), (837, 2386740), (930, 2148066), (1116, 1790055), (1395, 1432044), (1620, 1233149), (1674, 1193370), (1860, 1074033), (2511, 795580), (2790, 716022), (3348, 596685), (4185, 477348), (5022, 397790), (5580, 358011), (8370, 238674), (10044, 198895), (12555, 159116), (16740, 119337), (25110, 79558), (39779, 50220)]

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