20778888571

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{353}}^1\times {\mathrm{461}}^1$

素因数の和:904

約数の個数: 64

約数和(自身を含む): 26848039680

約数和(自身を除く): 6069151109

約数列:

[1, 7, 17, 29, 37, 119, 203, 259, 353, 461, 493, 629, 1073, 2471, 3227, 3451, 4403, 6001, 7511, 7837, 10237, 13061, 13369, 17057, 18241, 42007, 54859, 71659, 91427, 93583, 119399, 127687, 162733, 174029, 222037, 227273, 289969, 378769, 494653, 1139131, 1218203, 1554259, 1590911, 2029783, 2651383, 2766461, 3462571, 4719257, 6021121, 6439073, 8409101, 19365227, 33034799, 42147847, 45073511, 58863707, 80227369, 102359057, 174612509, 561591583, 716513399, 1222287563, 2968412653, 20778888571]

約数ペア:

[(1, 20778888571), (7, 2968412653), (17, 1222287563), (29, 716513399), (37, 561591583), (119, 174612509), (203, 102359057), (259, 80227369), (353, 58863707), (461, 45073511), (493, 42147847), (629, 33034799), (1073, 19365227), (2471, 8409101), (3227, 6439073), (3451, 6021121), (4403, 4719257), (6001, 3462571), (7511, 2766461), (7837, 2651383), (10237, 2029783), (13061, 1590911), (13369, 1554259), (17057, 1218203), (18241, 1139131), (42007, 494653), (54859, 378769), (71659, 289969), (91427, 227273), (93583, 222037), (119399, 174029), (127687, 162733)]