21543250

素因数分解:

$2^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1$

素因数の和:208

約数の個数: 64

約数和(自身を含む): 44175456

約数和(自身を除く): 22632206

約数列:

[1, 2, 5, 10, 17, 25, 34, 37, 50, 74, 85, 125, 137, 170, 185, 250, 274, 370, 425, 629, 685, 850, 925, 1258, 1370, 1850, 2125, 2329, 3145, 3425, 4250, 4625, 4658, 5069, 6290, 6850, 9250, 10138, 11645, 15725, 17125, 23290, 25345, 31450, 34250, 50690, 58225, 78625, 86173, 116450, 126725, 157250, 172346, 253450, 291125, 430865, 582250, 633625, 861730, 1267250, 2154325, 4308650, 10771625, 21543250]

約数ペア:

[(1, 21543250), (2, 10771625), (5, 4308650), (10, 2154325), (17, 1267250), (25, 861730), (34, 633625), (37, 582250), (50, 430865), (74, 291125), (85, 253450), (125, 172346), (137, 157250), (170, 126725), (185, 116450), (250, 86173), (274, 78625), (370, 58225), (425, 50690), (629, 34250), (685, 31450), (850, 25345), (925, 23290), (1258, 17125), (1370, 15725), (1850, 11645), (2125, 10138), (2329, 9250), (3145, 6850), (3425, 6290), (4250, 5069), (4625, 4658)]