349512920

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{143243}}^1$

素因数の和:143315

約数の個数: 32

約数和(自身を含む): 799301520

約数和(自身を除く): 449788600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 143243, 286486, 572972, 716215, 1145944, 1432430, 2864860, 5729720, 8737823, 17475646, 34951292, 43689115, 69902584, 87378230, 174756460, 349512920]

約数ペア:

[(1, 349512920), (2, 174756460), (4, 87378230), (5, 69902584), (8, 43689115), (10, 34951292), (20, 17475646), (40, 8737823), (61, 5729720), (122, 2864860), (244, 1432430), (305, 1145944), (488, 716215), (610, 572972), (1220, 286486), (2440, 143243)]