18448840

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{7561}}^1$

素因数の和:7633

約数の個数: 32

約数和(自身を含む): 42195960

約数和(自身を除く): 23747120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 7561, 15122, 30244, 37805, 60488, 75610, 151220, 302440, 461221, 922442, 1844884, 2306105, 3689768, 4612210, 9224420, 18448840]

約数ペア:

[(1, 18448840), (2, 9224420), (4, 4612210), (5, 3689768), (8, 2306105), (10, 1844884), (20, 922442), (40, 461221), (61, 302440), (122, 151220), (244, 75610), (305, 60488), (488, 37805), (610, 30244), (1220, 15122), (2440, 7561)]