28639900

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^2\times {\mathrm{991}}^1$

素因数の和:1039

約数の個数: 54

約数和(自身を含む): 66086048

約数和(自身を除く): 37446148

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 170, 289, 340, 425, 578, 850, 991, 1156, 1445, 1700, 1982, 2890, 3964, 4955, 5780, 7225, 9910, 14450, 16847, 19820, 24775, 28900, 33694, 49550, 67388, 84235, 99100, 168470, 286399, 336940, 421175, 572798, 842350, 1145596, 1431995, 1684700, 2863990, 5727980, 7159975, 14319950, 28639900]

約数ペア:

[(1, 28639900), (2, 14319950), (4, 7159975), (5, 5727980), (10, 2863990), (17, 1684700), (20, 1431995), (25, 1145596), (34, 842350), (50, 572798), (68, 421175), (85, 336940), (100, 286399), (170, 168470), (289, 99100), (340, 84235), (425, 67388), (578, 49550), (850, 33694), (991, 28900), (1156, 24775), (1445, 19820), (1700, 16847), (1982, 14450), (2890, 9910), (3964, 7225), (4955, 5780)]