28788039

素因数分解:

$3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{2251}}^1$

素因数の和:2300

約数の個数: 36

約数和(自身を含む): 50061960

約数和(自身を除く): 21273921

約数列:

[1, 3, 7, 9, 21, 29, 49, 63, 87, 147, 203, 261, 441, 609, 1421, 1827, 2251, 4263, 6753, 12789, 15757, 20259, 47271, 65279, 110299, 141813, 195837, 330897, 456953, 587511, 992691, 1370859, 3198671, 4112577, 9596013, 28788039]

約数ペア:

[(1, 28788039), (3, 9596013), (7, 4112577), (9, 3198671), (21, 1370859), (29, 992691), (49, 587511), (63, 456953), (87, 330897), (147, 195837), (203, 141813), (261, 110299), (441, 65279), (609, 47271), (1421, 20259), (1827, 15757), (2251, 12789), (4263, 6753)]