19870979907

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{67073}}^1$

素因数の和:67287

約数の個数: 32

約数和(自身を含む): 28995285312

約数和(自身を除く): 9124305405

約数列:

[1, 3, 17, 37, 51, 111, 157, 471, 629, 1887, 2669, 5809, 8007, 17427, 67073, 98753, 201219, 296259, 1140241, 2481701, 3420723, 7445103, 10530461, 31591383, 42188917, 126566751, 179017837, 389627057, 537053511, 1168881171, 6623659969, 19870979907]

約数ペア:

[(1, 19870979907), (3, 6623659969), (17, 1168881171), (37, 537053511), (51, 389627057), (111, 179017837), (157, 126566751), (471, 42188917), (629, 31591383), (1887, 10530461), (2669, 7445103), (5809, 3420723), (8007, 2481701), (17427, 1140241), (67073, 296259), (98753, 201219)]