20797254520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{661}}^1\times {\mathrm{3037}}^1$

素因数の和:3753

約数の個数: 128

約数和(自身を含む): 55025228160

約数和(自身を除く): 34227973640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 74, 140, 148, 185, 259, 280, 296, 370, 518, 661, 740, 1036, 1295, 1322, 1480, 2072, 2590, 2644, 3037, 3305, 4627, 5180, 5288, 6074, 6610, 9254, 10360, 12148, 13220, 15185, 18508, 21259, 23135, 24296, 24457, 26440, 30370, 37016, 42518, 46270, 48914, 60740, 85036, 92540, 97828, 106295, 112369, 121480, 122285, 170072, 171199, 185080, 195656, 212590, 224738, 244570, 342398, 425180, 449476, 489140, 561845, 684796, 786583, 850360, 855995, 898952, 978280, 1123690, 1369592, 1573166, 1711990, 2007457, 2247380, 3146332, 3423980, 3932915, 4014914, 4494760, 6292664, 6847960, 7865830, 8029828, 10037285, 14052199, 15731660, 16059656, 20074570, 28104398, 31463320, 40149140, 56208796, 70260995, 74275909, 80298280, 112417592, 140521990, 148551818, 281043980, 297103636, 371379545, 519931363, 562087960, 594207272, 742759090, 1039862726, 1485518180, 2079725452, 2599656815, 2971036360, 4159450904, 5199313630, 10398627260, 20797254520]

約数ペア:

[(1, 20797254520), (2, 10398627260), (4, 5199313630), (5, 4159450904), (7, 2971036360), (8, 2599656815), (10, 2079725452), (14, 1485518180), (20, 1039862726), (28, 742759090), (35, 594207272), (37, 562087960), (40, 519931363), (56, 371379545), (70, 297103636), (74, 281043980), (140, 148551818), (148, 140521990), (185, 112417592), (259, 80298280), (280, 74275909), (296, 70260995), (370, 56208796), (518, 40149140), (661, 31463320), (740, 28104398), (1036, 20074570), (1295, 16059656), (1322, 15731660), (1480, 14052199), (2072, 10037285), (2590, 8029828), (2644, 7865830), (3037, 6847960), (3305, 6292664), (4627, 4494760), (5180, 4014914), (5288, 3932915), (6074, 3423980), (6610, 3146332), (9254, 2247380), (10360, 2007457), (12148, 1711990), (13220, 1573166), (15185, 1369592), (18508, 1123690), (21259, 978280), (23135, 898952), (24296, 855995), (24457, 850360), (26440, 786583), (30370, 684796), (37016, 561845), (42518, 489140), (46270, 449476), (48914, 425180), (60740, 342398), (85036, 244570), (92540, 224738), (97828, 212590), (106295, 195656), (112369, 185080), (121480, 171199), (122285, 170072)]