206816540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{739}}^1\times {\mathrm{1999}}^1$

素因数の和:2754

約数の個数: 48

約数和(自身を含む): 497280000

約数和(自身を除く): 290463460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 739, 1478, 1999, 2956, 3695, 3998, 5173, 7390, 7996, 9995, 10346, 13993, 14780, 19990, 20692, 25865, 27986, 39980, 51730, 55972, 69965, 103460, 139930, 279860, 1477261, 2954522, 5909044, 7386305, 10340827, 14772610, 20681654, 29545220, 41363308, 51704135, 103408270, 206816540]

約数ペア:

[(1, 206816540), (2, 103408270), (4, 51704135), (5, 41363308), (7, 29545220), (10, 20681654), (14, 14772610), (20, 10340827), (28, 7386305), (35, 5909044), (70, 2954522), (140, 1477261), (739, 279860), (1478, 139930), (1999, 103460), (2956, 69965), (3695, 55972), (3998, 51730), (5173, 39980), (7390, 27986), (7996, 25865), (9995, 20692), (10346, 19990), (13993, 14780)]