21830725

素因数分解:

$5^2\times 7^2\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:346

約数の個数: 36

約数和(自身を含む): 32060448

約数和(自身を除く): 10229723

約数列:

[1, 5, 7, 25, 35, 49, 71, 175, 245, 251, 355, 497, 1225, 1255, 1757, 1775, 2485, 3479, 6275, 8785, 12299, 12425, 17395, 17821, 43925, 61495, 86975, 89105, 124747, 307475, 445525, 623735, 873229, 3118675, 4366145, 21830725]

約数ペア:

[(1, 21830725), (5, 4366145), (7, 3118675), (25, 873229), (35, 623735), (49, 445525), (71, 307475), (175, 124747), (245, 89105), (251, 86975), (355, 61495), (497, 43925), (1225, 17821), (1255, 17395), (1757, 12425), (1775, 12299), (2485, 8785), (3479, 6275)]