About the Number

1271561880

1271561879 ← → 1271561881

2進数表記:1001011110010100111111010011000

漢数字表記:十二億七千百五十六万千八百八十

素因数分解:

2 3 × 3 1 × 5 1 × 79 1 × 113 1 × 1187 1

素因数の和:1393
約数の個数: 128
約数和(自身を含む): 3900441600
約数和(自身を除く): 2628879720

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 79, 113, 120, 158, 226, 237, 316, 339, 395, 452, 474, 565, 632, 678, 790, 904, 948, 1130, 1185, 1187, 1356, 1580, 1695, 1896, 2260, 2370, 2374, 2712, 3160, 3390, 3561, 4520, 4740, 4748, 5935, 6780, 7122, 8927, 9480, 9496, 11870, 13560, 14244, 17805, 17854, 23740, 26781, 28488, 35610, 35708, 44635, 47480, 53562, 71220, 71416, 89270, 93773, 107124, 133905, 134131, 142440, 178540, 187546, 214248, 267810, 268262, 281319, 357080, 375092, 402393, 468865, 535620, 536524, 562638, 670655, 750184, 804786, 937730, 1071240, 1073048, 1125276, 1341310, 1406595, 1609572, 1875460, 2011965, 2250552, 2682620, 2813190, 3219144, 3750920, 4023930, 5365240, 5626380, 8047860, 10596349, 11252760, 16095720, 21192698, 31789047, 42385396, 52981745, 63578094, 84770792, 105963490, 127156188, 158945235, 211926980, 254312376, 317890470, 423853960, 635780940, 1271561880]

約数ペア:
[(1, 1271561880), (2, 635780940), (3, 423853960), (4, 317890470), (5, 254312376), (6, 211926980), (8, 158945235), (10, 127156188), (12, 105963490), (15, 84770792), (20, 63578094), (24, 52981745), (30, 42385396), (40, 31789047), (60, 21192698), (79, 16095720), (113, 11252760), (120, 10596349), (158, 8047860), (226, 5626380), (237, 5365240), (316, 4023930), (339, 3750920), (395, 3219144), (452, 2813190), (474, 2682620), (565, 2250552), (632, 2011965), (678, 1875460), (790, 1609572), (904, 1406595), (948, 1341310), (1130, 1125276), (1185, 1073048), (1187, 1071240), (1356, 937730), (1580, 804786), (1695, 750184), (1896, 670655), (2260, 562638), (2370, 536524), (2374, 535620), (2712, 468865), (3160, 402393), (3390, 375092), (3561, 357080), (4520, 281319), (4740, 268262), (4748, 267810), (5935, 214248), (6780, 187546), (7122, 178540), (8927, 142440), (9480, 134131), (9496, 133905), (11870, 107124), (13560, 93773), (14244, 89270), (17805, 71416), (17854, 71220), (23740, 53562), (26781, 47480), (28488, 44635), (35610, 35708)]

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