31999149

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{439}}^1$

素因数の和:554

約数の個数: 48

約数和(自身を含む): 57657600

約数和(自身を除く): 25658451

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 89, 91, 117, 267, 273, 439, 623, 801, 819, 1157, 1317, 1869, 3073, 3471, 3951, 5607, 5707, 8099, 9219, 10413, 17121, 24297, 27657, 39071, 39949, 51363, 72891, 117213, 119847, 273497, 351639, 359541, 507923, 820491, 1523769, 2461473, 3555461, 4571307, 10666383, 31999149]

約数ペア:

[(1, 31999149), (3, 10666383), (7, 4571307), (9, 3555461), (13, 2461473), (21, 1523769), (39, 820491), (63, 507923), (89, 359541), (91, 351639), (117, 273497), (267, 119847), (273, 117213), (439, 72891), (623, 51363), (801, 39949), (819, 39071), (1157, 27657), (1317, 24297), (1869, 17121), (3073, 10413), (3471, 9219), (3951, 8099), (5607, 5707)]