66886540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{1999}}^1$

素因数の和:2254

約数の個数: 48

約数和(自身を含む): 161280000

約数和(自身を除く): 94393460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 239, 478, 956, 1195, 1673, 1999, 2390, 3346, 3998, 4780, 6692, 7996, 8365, 9995, 13993, 16730, 19990, 27986, 33460, 39980, 55972, 69965, 139930, 279860, 477761, 955522, 1911044, 2388805, 3344327, 4777610, 6688654, 9555220, 13377308, 16721635, 33443270, 66886540]

約数ペア:

[(1, 66886540), (2, 33443270), (4, 16721635), (5, 13377308), (7, 9555220), (10, 6688654), (14, 4777610), (20, 3344327), (28, 2388805), (35, 1911044), (70, 955522), (140, 477761), (239, 279860), (478, 139930), (956, 69965), (1195, 55972), (1673, 39980), (1999, 33460), (2390, 27986), (3346, 19990), (3998, 16730), (4780, 13993), (6692, 9995), (7996, 8365)]