21030615

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{743}}^1$

素因数の和:808

約数の個数: 48

約数和(自身を含む): 39693888

約数和(自身を除く): 18663273

約数列:

[1, 3, 5, 9, 15, 17, 37, 45, 51, 85, 111, 153, 185, 255, 333, 555, 629, 743, 765, 1665, 1887, 2229, 3145, 3715, 5661, 6687, 9435, 11145, 12631, 27491, 28305, 33435, 37893, 63155, 82473, 113679, 137455, 189465, 247419, 412365, 467347, 568395, 1237095, 1402041, 2336735, 4206123, 7010205, 21030615]

約数ペア:

[(1, 21030615), (3, 7010205), (5, 4206123), (9, 2336735), (15, 1402041), (17, 1237095), (37, 568395), (45, 467347), (51, 412365), (85, 247419), (111, 189465), (153, 137455), (185, 113679), (255, 82473), (333, 63155), (555, 37893), (629, 33435), (743, 28305), (765, 27491), (1665, 12631), (1887, 11145), (2229, 9435), (3145, 6687), (3715, 5661)]