21043425

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{191}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 37997568

約数和(自身を除く): 16954143

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 113, 191, 195, 325, 339, 565, 573, 955, 975, 1469, 1695, 2483, 2825, 2865, 4407, 4775, 7345, 7449, 8475, 12415, 14325, 21583, 22035, 36725, 37245, 62075, 64749, 107915, 110175, 186225, 280579, 323745, 539575, 841737, 1402895, 1618725, 4208685, 7014475, 21043425]

約数ペア:

[(1, 21043425), (3, 7014475), (5, 4208685), (13, 1618725), (15, 1402895), (25, 841737), (39, 539575), (65, 323745), (75, 280579), (113, 186225), (191, 110175), (195, 107915), (325, 64749), (339, 62075), (565, 37245), (573, 36725), (955, 22035), (975, 21583), (1469, 14325), (1695, 12415), (2483, 8475), (2825, 7449), (2865, 7345), (4407, 4775)]