21848920

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{6581}}^1$

素因数の和:6675

約数の個数: 32

約数和(自身を含む): 49759920

約数和(自身を除く): 27911000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 6581, 13162, 26324, 32905, 52648, 65810, 131620, 263240, 546223, 1092446, 2184892, 2731115, 4369784, 5462230, 10924460, 21848920]

約数ペア:

[(1, 21848920), (2, 10924460), (4, 5462230), (5, 4369784), (8, 2731115), (10, 2184892), (20, 1092446), (40, 546223), (83, 263240), (166, 131620), (332, 65810), (415, 52648), (664, 32905), (830, 26324), (1660, 13162), (3320, 6581)]