19887388

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{173}}^1\times {\mathrm{991}}^1$

素因数の和:1197

約数の個数: 24

約数和(自身を含む): 36247680

約数和(自身を除く): 16360292

約数列:

[1, 2, 4, 29, 58, 116, 173, 346, 692, 991, 1982, 3964, 5017, 10034, 20068, 28739, 57478, 114956, 171443, 342886, 685772, 4971847, 9943694, 19887388]

約数ペア:

[(1, 19887388), (2, 9943694), (4, 4971847), (29, 685772), (58, 342886), (116, 171443), (173, 114956), (346, 57478), (692, 28739), (991, 20068), (1982, 10034), (3964, 5017)]