21264570

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{349}}^1\times {\mathrm{677}}^1$

素因数の和:1039

約数の個数: 48

約数和(自身を含む): 55528200

約数和(自身を除く): 34263630

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 349, 677, 698, 1047, 1354, 1745, 2031, 2094, 3141, 3385, 3490, 4062, 5235, 6093, 6282, 6770, 10155, 10470, 12186, 15705, 20310, 30465, 31410, 60930, 236273, 472546, 708819, 1181365, 1417638, 2126457, 2362730, 3544095, 4252914, 7088190, 10632285, 21264570]

約数ペア:

[(1, 21264570), (2, 10632285), (3, 7088190), (5, 4252914), (6, 3544095), (9, 2362730), (10, 2126457), (15, 1417638), (18, 1181365), (30, 708819), (45, 472546), (90, 236273), (349, 60930), (677, 31410), (698, 30465), (1047, 20310), (1354, 15705), (1745, 12186), (2031, 10470), (2094, 10155), (3141, 6770), (3385, 6282), (3490, 6093), (4062, 5235)]