291210160

素因数分解:

$2^4\times 5^1\times {\mathrm{661}}^1\times {\mathrm{5507}}^1$

素因数の和:6181

約数の個数: 40

約数和(自身を含む): 678211056

約数和(自身を除く): 387000896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 661, 1322, 2644, 3305, 5288, 5507, 6610, 10576, 11014, 13220, 22028, 26440, 27535, 44056, 52880, 55070, 88112, 110140, 220280, 440560, 3640127, 7280254, 14560508, 18200635, 29121016, 36401270, 58242032, 72802540, 145605080, 291210160]

約数ペア:

[(1, 291210160), (2, 145605080), (4, 72802540), (5, 58242032), (8, 36401270), (10, 29121016), (16, 18200635), (20, 14560508), (40, 7280254), (80, 3640127), (661, 440560), (1322, 220280), (2644, 110140), (3305, 88112), (5288, 55070), (5507, 52880), (6610, 44056), (10576, 27535), (11014, 26440), (13220, 22028)]