20501760

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{281}}^1$

素因数の和:324

約数の個数: 144

約数和(自身を含む): 69168960

約数和(自身を除く): 48667200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 32, 38, 40, 48, 57, 60, 64, 76, 80, 95, 96, 114, 120, 128, 152, 160, 190, 192, 228, 240, 256, 281, 285, 304, 320, 380, 384, 456, 480, 562, 570, 608, 640, 760, 768, 843, 912, 960, 1124, 1140, 1216, 1280, 1405, 1520, 1686, 1824, 1920, 2248, 2280, 2432, 2810, 3040, 3372, 3648, 3840, 4215, 4496, 4560, 4864, 5339, 5620, 6080, 6744, 7296, 8430, 8992, 9120, 10678, 11240, 12160, 13488, 14592, 16017, 16860, 17984, 18240, 21356, 22480, 24320, 26695, 26976, 32034, 33720, 35968, 36480, 42712, 44960, 53390, 53952, 64068, 67440, 71936, 72960, 80085, 85424, 89920, 106780, 107904, 128136, 134880, 160170, 170848, 179840, 213560, 215808, 256272, 269760, 320340, 341696, 359680, 427120, 512544, 539520, 640680, 683392, 854240, 1025088, 1079040, 1281360, 1366784, 1708480, 2050176, 2562720, 3416960, 4100352, 5125440, 6833920, 10250880, 20501760]

約数ペア:

[(1, 20501760), (2, 10250880), (3, 6833920), (4, 5125440), (5, 4100352), (6, 3416960), (8, 2562720), (10, 2050176), (12, 1708480), (15, 1366784), (16, 1281360), (19, 1079040), (20, 1025088), (24, 854240), (30, 683392), (32, 640680), (38, 539520), (40, 512544), (48, 427120), (57, 359680), (60, 341696), (64, 320340), (76, 269760), (80, 256272), (95, 215808), (96, 213560), (114, 179840), (120, 170848), (128, 160170), (152, 134880), (160, 128136), (190, 107904), (192, 106780), (228, 89920), (240, 85424), (256, 80085), (281, 72960), (285, 71936), (304, 67440), (320, 64068), (380, 53952), (384, 53390), (456, 44960), (480, 42712), (562, 36480), (570, 35968), (608, 33720), (640, 32034), (760, 26976), (768, 26695), (843, 24320), (912, 22480), (960, 21356), (1124, 18240), (1140, 17984), (1216, 16860), (1280, 16017), (1405, 14592), (1520, 13488), (1686, 12160), (1824, 11240), (1920, 10678), (2248, 9120), (2280, 8992), (2432, 8430), (2810, 7296), (3040, 6744), (3372, 6080), (3648, 5620), (3840, 5339), (4215, 4864), (4496, 4560)]