20958480

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{313}}^1$

素因数の和:366

約数の個数: 160

約数和(自身を含む): 74757120

約数和(自身を除く): 53798640

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 31, 36, 40, 45, 48, 54, 60, 62, 72, 80, 90, 93, 108, 120, 124, 135, 144, 155, 180, 186, 216, 240, 248, 270, 279, 310, 313, 360, 372, 432, 465, 496, 540, 558, 620, 626, 720, 744, 837, 930, 939, 1080, 1116, 1240, 1252, 1395, 1488, 1565, 1674, 1860, 1878, 2160, 2232, 2480, 2504, 2790, 2817, 3130, 3348, 3720, 3756, 4185, 4464, 4695, 5008, 5580, 5634, 6260, 6696, 7440, 7512, 8370, 8451, 9390, 9703, 11160, 11268, 12520, 13392, 14085, 15024, 16740, 16902, 18780, 19406, 22320, 22536, 25040, 28170, 29109, 33480, 33804, 37560, 38812, 42255, 45072, 48515, 56340, 58218, 66960, 67608, 75120, 77624, 84510, 87327, 97030, 112680, 116436, 135216, 145545, 155248, 169020, 174654, 194060, 225360, 232872, 261981, 291090, 338040, 349308, 388120, 436635, 465744, 523962, 582180, 676080, 698616, 776240, 873270, 1047924, 1164360, 1309905, 1397232, 1746540, 2095848, 2328720, 2619810, 3493080, 4191696, 5239620, 6986160, 10479240, 20958480]

約数ペア:

[(1, 20958480), (2, 10479240), (3, 6986160), (4, 5239620), (5, 4191696), (6, 3493080), (8, 2619810), (9, 2328720), (10, 2095848), (12, 1746540), (15, 1397232), (16, 1309905), (18, 1164360), (20, 1047924), (24, 873270), (27, 776240), (30, 698616), (31, 676080), (36, 582180), (40, 523962), (45, 465744), (48, 436635), (54, 388120), (60, 349308), (62, 338040), (72, 291090), (80, 261981), (90, 232872), (93, 225360), (108, 194060), (120, 174654), (124, 169020), (135, 155248), (144, 145545), (155, 135216), (180, 116436), (186, 112680), (216, 97030), (240, 87327), (248, 84510), (270, 77624), (279, 75120), (310, 67608), (313, 66960), (360, 58218), (372, 56340), (432, 48515), (465, 45072), (496, 42255), (540, 38812), (558, 37560), (620, 33804), (626, 33480), (720, 29109), (744, 28170), (837, 25040), (930, 22536), (939, 22320), (1080, 19406), (1116, 18780), (1240, 16902), (1252, 16740), (1395, 15024), (1488, 14085), (1565, 13392), (1674, 12520), (1860, 11268), (1878, 11160), (2160, 9703), (2232, 9390), (2480, 8451), (2504, 8370), (2790, 7512), (2817, 7440), (3130, 6696), (3348, 6260), (3720, 5634), (3756, 5580), (4185, 5008), (4464, 4695)]