154840

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{79}}^1$

素因数の和:104

約数の個数: 48

約数和(自身を含む): 410400

約数和(自身を除く): 255560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 79, 98, 140, 158, 196, 245, 280, 316, 392, 395, 490, 553, 632, 790, 980, 1106, 1580, 1960, 2212, 2765, 3160, 3871, 4424, 5530, 7742, 11060, 15484, 19355, 22120, 30968, 38710, 77420, 154840]

約数ペア:

[(1, 154840), (2, 77420), (4, 38710), (5, 30968), (7, 22120), (8, 19355), (10, 15484), (14, 11060), (20, 7742), (28, 5530), (35, 4424), (40, 3871), (49, 3160), (56, 2765), (70, 2212), (79, 1960), (98, 1580), (140, 1106), (158, 980), (196, 790), (245, 632), (280, 553), (316, 490), (392, 395)]