77420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{79}}^1$

素因数の和:102

約数の個数: 36

約数和(自身を含む): 191520

約数和(自身を除く): 114100

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 79, 98, 140, 158, 196, 245, 316, 395, 490, 553, 790, 980, 1106, 1580, 2212, 2765, 3871, 5530, 7742, 11060, 15484, 19355, 38710, 77420]

約数ペア:

[(1, 77420), (2, 38710), (4, 19355), (5, 15484), (7, 11060), (10, 7742), (14, 5530), (20, 3871), (28, 2765), (35, 2212), (49, 1580), (70, 1106), (79, 980), (98, 790), (140, 553), (158, 490), (196, 395), (245, 316)]