21950175

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{479}}^1$

素因数の和:552

約数の個数: 48

約数和(自身を含む): 39997440

約数和(自身を除く): 18047265

約数列:

[1, 3, 5, 13, 15, 25, 39, 47, 65, 75, 141, 195, 235, 325, 479, 611, 705, 975, 1175, 1437, 1833, 2395, 3055, 3525, 6227, 7185, 9165, 11975, 15275, 18681, 22513, 31135, 35925, 45825, 67539, 93405, 112565, 155675, 292669, 337695, 467025, 562825, 878007, 1463345, 1688475, 4390035, 7316725, 21950175]

約数ペア:

[(1, 21950175), (3, 7316725), (5, 4390035), (13, 1688475), (15, 1463345), (25, 878007), (39, 562825), (47, 467025), (65, 337695), (75, 292669), (141, 155675), (195, 112565), (235, 93405), (325, 67539), (479, 45825), (611, 35925), (705, 31135), (975, 22513), (1175, 18681), (1437, 15275), (1833, 11975), (2395, 9165), (3055, 7185), (3525, 6227)]