398181780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{5039}}^1$

素因数の和:5493

約数の個数: 72

約数和(自身を含む): 1210809600

約数和(自身を除く): 812627820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 439, 878, 1317, 1756, 2195, 2634, 3951, 4390, 5039, 5268, 6585, 7902, 8780, 10078, 13170, 15117, 15804, 19755, 20156, 25195, 26340, 30234, 39510, 45351, 50390, 60468, 75585, 79020, 90702, 100780, 151170, 181404, 226755, 302340, 453510, 907020, 2212121, 4424242, 6636363, 8848484, 11060605, 13272726, 19909089, 22121210, 26545452, 33181815, 39818178, 44242420, 66363630, 79636356, 99545445, 132727260, 199090890, 398181780]

約数ペア:

[(1, 398181780), (2, 199090890), (3, 132727260), (4, 99545445), (5, 79636356), (6, 66363630), (9, 44242420), (10, 39818178), (12, 33181815), (15, 26545452), (18, 22121210), (20, 19909089), (30, 13272726), (36, 11060605), (45, 8848484), (60, 6636363), (90, 4424242), (180, 2212121), (439, 907020), (878, 453510), (1317, 302340), (1756, 226755), (2195, 181404), (2634, 151170), (3951, 100780), (4390, 90702), (5039, 79020), (5268, 75585), (6585, 60468), (7902, 50390), (8780, 45351), (10078, 39510), (13170, 30234), (15117, 26340), (15804, 25195), (19755, 20156)]