397880

素因数分解:

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

素因数の和:61

約数の個数: 64

約数和(自身を含む): 1080000

約数和(自身を除く): 682120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 49, 56, 58, 70, 98, 116, 140, 145, 196, 203, 232, 245, 280, 290, 343, 392, 406, 490, 580, 686, 812, 980, 1015, 1160, 1372, 1421, 1624, 1715, 1960, 2030, 2744, 2842, 3430, 4060, 5684, 6860, 7105, 8120, 9947, 11368, 13720, 14210, 19894, 28420, 39788, 49735, 56840, 79576, 99470, 198940, 397880]

約数ペア:

[(1, 397880), (2, 198940), (4, 99470), (5, 79576), (7, 56840), (8, 49735), (10, 39788), (14, 28420), (20, 19894), (28, 14210), (29, 13720), (35, 11368), (40, 9947), (49, 8120), (56, 7105), (58, 6860), (70, 5684), (98, 4060), (116, 3430), (140, 2842), (145, 2744), (196, 2030), (203, 1960), (232, 1715), (245, 1624), (280, 1421), (290, 1372), (343, 1160), (392, 1015), (406, 980), (490, 812), (580, 686)]