20278320

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{4447}}^1$

素因数の和:4482

約数の個数: 80

約数和(自身を含む): 66186240

約数和(自身を除く): 45907920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 38, 40, 48, 57, 60, 76, 80, 95, 114, 120, 152, 190, 228, 240, 285, 304, 380, 456, 570, 760, 912, 1140, 1520, 2280, 4447, 4560, 8894, 13341, 17788, 22235, 26682, 35576, 44470, 53364, 66705, 71152, 84493, 88940, 106728, 133410, 168986, 177880, 213456, 253479, 266820, 337972, 355760, 422465, 506958, 533640, 675944, 844930, 1013916, 1067280, 1267395, 1351888, 1689860, 2027832, 2534790, 3379720, 4055664, 5069580, 6759440, 10139160, 20278320]

約数ペア:

[(1, 20278320), (2, 10139160), (3, 6759440), (4, 5069580), (5, 4055664), (6, 3379720), (8, 2534790), (10, 2027832), (12, 1689860), (15, 1351888), (16, 1267395), (19, 1067280), (20, 1013916), (24, 844930), (30, 675944), (38, 533640), (40, 506958), (48, 422465), (57, 355760), (60, 337972), (76, 266820), (80, 253479), (95, 213456), (114, 177880), (120, 168986), (152, 133410), (190, 106728), (228, 88940), (240, 84493), (285, 71152), (304, 66705), (380, 53364), (456, 44470), (570, 35576), (760, 26682), (912, 22235), (1140, 17788), (1520, 13341), (2280, 8894), (4447, 4560)]