19754840

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10079}}^1$

素因数の和:10104

約数の個数: 48

約数和(自身を含む): 51710400

約数和(自身を除く): 31955560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 10079, 20158, 40316, 50395, 70553, 80632, 100790, 141106, 201580, 282212, 352765, 403160, 493871, 564424, 705530, 987742, 1411060, 1975484, 2469355, 2822120, 3950968, 4938710, 9877420, 19754840]

約数ペア:

[(1, 19754840), (2, 9877420), (4, 4938710), (5, 3950968), (7, 2822120), (8, 2469355), (10, 1975484), (14, 1411060), (20, 987742), (28, 705530), (35, 564424), (40, 493871), (49, 403160), (56, 352765), (70, 282212), (98, 201580), (140, 141106), (196, 100790), (245, 80632), (280, 70553), (392, 50395), (490, 40316), (980, 20158), (1960, 10079)]