18293840

素因数分解:

$2^4\times 5^1\times {\mathrm{347}}^1\times {\mathrm{659}}^1$

素因数の和:1019

約数の個数: 40

約数和(自身を含む): 42720480

約数和(自身を除く): 24426640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 347, 659, 694, 1318, 1388, 1735, 2636, 2776, 3295, 3470, 5272, 5552, 6590, 6940, 10544, 13180, 13880, 26360, 27760, 52720, 228673, 457346, 914692, 1143365, 1829384, 2286730, 3658768, 4573460, 9146920, 18293840]

約数ペア:

[(1, 18293840), (2, 9146920), (4, 4573460), (5, 3658768), (8, 2286730), (10, 1829384), (16, 1143365), (20, 914692), (40, 457346), (80, 228673), (347, 52720), (659, 27760), (694, 26360), (1318, 13880), (1388, 13180), (1735, 10544), (2636, 6940), (2776, 6590), (3295, 5552), (3470, 5272)]