397816240

素因数分解:

$2^4\times 5^1\times {\mathrm{661}}^1\times {\mathrm{7523}}^1$

素因数の和:8197

約数の個数: 40

約数和(自身を含む): 926445168

約数和(自身を除く): 528628928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 661, 1322, 2644, 3305, 5288, 6610, 7523, 10576, 13220, 15046, 26440, 30092, 37615, 52880, 60184, 75230, 120368, 150460, 300920, 601840, 4972703, 9945406, 19890812, 24863515, 39781624, 49727030, 79563248, 99454060, 198908120, 397816240]

約数ペア:

[(1, 397816240), (2, 198908120), (4, 99454060), (5, 79563248), (8, 49727030), (10, 39781624), (16, 24863515), (20, 19890812), (40, 9945406), (80, 4972703), (661, 601840), (1322, 300920), (2644, 150460), (3305, 120368), (5288, 75230), (6610, 60184), (7523, 52880), (10576, 37615), (13220, 30092), (15046, 26440)]