198940

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{29}}^1$

素因数の和:59

約数の個数: 48

約数和(自身を含む): 504000

約数和(自身を除く): 305060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 49, 58, 70, 98, 116, 140, 145, 196, 203, 245, 290, 343, 406, 490, 580, 686, 812, 980, 1015, 1372, 1421, 1715, 2030, 2842, 3430, 4060, 5684, 6860, 7105, 9947, 14210, 19894, 28420, 39788, 49735, 99470, 198940]

約数ペア:

[(1, 198940), (2, 99470), (4, 49735), (5, 39788), (7, 28420), (10, 19894), (14, 14210), (20, 9947), (28, 7105), (29, 6860), (35, 5684), (49, 4060), (58, 3430), (70, 2842), (98, 2030), (116, 1715), (140, 1421), (145, 1372), (196, 1015), (203, 980), (245, 812), (290, 686), (343, 580), (406, 490)]