81885720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1373}}^1$

素因数の和:1465

約数の個数: 128

約数和(自身を含む): 284912640

約数和(自身を除く): 203026920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 71, 84, 105, 120, 140, 142, 168, 210, 213, 280, 284, 355, 420, 426, 497, 568, 710, 840, 852, 994, 1065, 1373, 1420, 1491, 1704, 1988, 2130, 2485, 2746, 2840, 2982, 3976, 4119, 4260, 4970, 5492, 5964, 6865, 7455, 8238, 8520, 9611, 9940, 10984, 11928, 13730, 14910, 16476, 19222, 19880, 20595, 27460, 28833, 29820, 32952, 38444, 41190, 48055, 54920, 57666, 59640, 76888, 82380, 96110, 97483, 115332, 144165, 164760, 192220, 194966, 230664, 288330, 292449, 384440, 389932, 487415, 576660, 584898, 682381, 779864, 974830, 1153320, 1169796, 1364762, 1462245, 1949660, 2047143, 2339592, 2729524, 2924490, 3411905, 3899320, 4094286, 5459048, 5848980, 6823810, 8188572, 10235715, 11697960, 13647620, 16377144, 20471430, 27295240, 40942860, 81885720]

約数ペア:

[(1, 81885720), (2, 40942860), (3, 27295240), (4, 20471430), (5, 16377144), (6, 13647620), (7, 11697960), (8, 10235715), (10, 8188572), (12, 6823810), (14, 5848980), (15, 5459048), (20, 4094286), (21, 3899320), (24, 3411905), (28, 2924490), (30, 2729524), (35, 2339592), (40, 2047143), (42, 1949660), (56, 1462245), (60, 1364762), (70, 1169796), (71, 1153320), (84, 974830), (105, 779864), (120, 682381), (140, 584898), (142, 576660), (168, 487415), (210, 389932), (213, 384440), (280, 292449), (284, 288330), (355, 230664), (420, 194966), (426, 192220), (497, 164760), (568, 144165), (710, 115332), (840, 97483), (852, 96110), (994, 82380), (1065, 76888), (1373, 59640), (1420, 57666), (1491, 54920), (1704, 48055), (1988, 41190), (2130, 38444), (2485, 32952), (2746, 29820), (2840, 28833), (2982, 27460), (3976, 20595), (4119, 19880), (4260, 19222), (4970, 16476), (5492, 14910), (5964, 13730), (6865, 11928), (7455, 10984), (8238, 9940), (8520, 9611)]