81369808

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1$

素因数の和:264

約数の個数: 80

約数和(自身を含む): 177783760

約数和(自身を除く): 96413952

約数列:

[1, 2, 4, 8, 13, 16, 26, 37, 52, 74, 97, 104, 109, 148, 194, 208, 218, 296, 388, 436, 481, 592, 776, 872, 962, 1261, 1417, 1552, 1744, 1924, 2522, 2834, 3589, 3848, 4033, 5044, 5668, 7178, 7696, 8066, 10088, 10573, 11336, 14356, 16132, 20176, 21146, 22672, 28712, 32264, 42292, 46657, 52429, 57424, 64528, 84584, 93314, 104858, 137449, 169168, 186628, 209716, 274898, 373256, 391201, 419432, 549796, 746512, 782402, 838864, 1099592, 1564804, 2199184, 3129608, 5085613, 6259216, 10171226, 20342452, 40684904, 81369808]

約数ペア:

[(1, 81369808), (2, 40684904), (4, 20342452), (8, 10171226), (13, 6259216), (16, 5085613), (26, 3129608), (37, 2199184), (52, 1564804), (74, 1099592), (97, 838864), (104, 782402), (109, 746512), (148, 549796), (194, 419432), (208, 391201), (218, 373256), (296, 274898), (388, 209716), (436, 186628), (481, 169168), (592, 137449), (776, 104858), (872, 93314), (962, 84584), (1261, 64528), (1417, 57424), (1552, 52429), (1744, 46657), (1924, 42292), (2522, 32264), (2834, 28712), (3589, 22672), (3848, 21146), (4033, 20176), (5044, 16132), (5668, 14356), (7178, 11336), (7696, 10573), (8066, 10088)]