81173456

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{283}}^1$

素因数の和:508

約数の個数: 80

約数和(自身を含む): 195237504

約数和(自身を除く): 114064048

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 197, 208, 283, 364, 394, 566, 728, 788, 1132, 1379, 1456, 1576, 1981, 2264, 2561, 2758, 3152, 3679, 3962, 4528, 5122, 5516, 7358, 7924, 10244, 11032, 14716, 15848, 17927, 20488, 22064, 25753, 29432, 31696, 35854, 40976, 51506, 55751, 58864, 71708, 103012, 111502, 143416, 206024, 223004, 286832, 390257, 412048, 446008, 724763, 780514, 892016, 1449526, 1561028, 2899052, 3122056, 5073341, 5798104, 6244112, 10146682, 11596208, 20293364, 40586728, 81173456]

約数ペア:

[(1, 81173456), (2, 40586728), (4, 20293364), (7, 11596208), (8, 10146682), (13, 6244112), (14, 5798104), (16, 5073341), (26, 3122056), (28, 2899052), (52, 1561028), (56, 1449526), (91, 892016), (104, 780514), (112, 724763), (182, 446008), (197, 412048), (208, 390257), (283, 286832), (364, 223004), (394, 206024), (566, 143416), (728, 111502), (788, 103012), (1132, 71708), (1379, 58864), (1456, 55751), (1576, 51506), (1981, 40976), (2264, 35854), (2561, 31696), (2758, 29432), (3152, 25753), (3679, 22064), (3962, 20488), (4528, 17927), (5122, 15848), (5516, 14716), (7358, 11032), (7924, 10244)]