16820320

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{503}}^1$

素因数の和:548

約数の個数: 96

約数和(自身を含む): 45722880

約数和(自身を除く): 28902560

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 32, 38, 40, 44, 55, 76, 80, 88, 95, 110, 152, 160, 176, 190, 209, 220, 304, 352, 380, 418, 440, 503, 608, 760, 836, 880, 1006, 1045, 1520, 1672, 1760, 2012, 2090, 2515, 3040, 3344, 4024, 4180, 5030, 5533, 6688, 8048, 8360, 9557, 10060, 11066, 16096, 16720, 19114, 20120, 22132, 27665, 33440, 38228, 40240, 44264, 47785, 55330, 76456, 80480, 88528, 95570, 105127, 110660, 152912, 177056, 191140, 210254, 221320, 305824, 382280, 420508, 442640, 525635, 764560, 841016, 885280, 1051270, 1529120, 1682032, 2102540, 3364064, 4205080, 8410160, 16820320]

約数ペア:

[(1, 16820320), (2, 8410160), (4, 4205080), (5, 3364064), (8, 2102540), (10, 1682032), (11, 1529120), (16, 1051270), (19, 885280), (20, 841016), (22, 764560), (32, 525635), (38, 442640), (40, 420508), (44, 382280), (55, 305824), (76, 221320), (80, 210254), (88, 191140), (95, 177056), (110, 152912), (152, 110660), (160, 105127), (176, 95570), (190, 88528), (209, 80480), (220, 76456), (304, 55330), (352, 47785), (380, 44264), (418, 40240), (440, 38228), (503, 33440), (608, 27665), (760, 22132), (836, 20120), (880, 19114), (1006, 16720), (1045, 16096), (1520, 11066), (1672, 10060), (1760, 9557), (2012, 8360), (2090, 8048), (2515, 6688), (3040, 5533), (3344, 5030), (4024, 4180)]