20278878

素因数分解:

$2^1\times 3^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1\times {\mathrm{263}}^1$

素因数の和:520

約数の個数: 32

約数和(自身を含む): 41513472

約数和(自身を除く): 21234594

約数列:

[1, 2, 3, 6, 71, 142, 181, 213, 263, 362, 426, 526, 543, 789, 1086, 1578, 12851, 18673, 25702, 37346, 38553, 47603, 56019, 77106, 95206, 112038, 142809, 285618, 3379813, 6759626, 10139439, 20278878]

約数ペア:

[(1, 20278878), (2, 10139439), (3, 6759626), (6, 3379813), (71, 285618), (142, 142809), (181, 112038), (213, 95206), (263, 77106), (362, 56019), (426, 47603), (526, 38553), (543, 37346), (789, 25702), (1086, 18673), (1578, 12851)]