21454000

素因数分解:

$2^4\times 5^3\times {\mathrm{17}}^1\times {\mathrm{631}}^1$

素因数の和:671

約数の個数: 80

約数和(自身を含む): 55014336

約数和(自身を除く): 33560336

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 34, 40, 50, 68, 80, 85, 100, 125, 136, 170, 200, 250, 272, 340, 400, 425, 500, 631, 680, 850, 1000, 1262, 1360, 1700, 2000, 2125, 2524, 3155, 3400, 4250, 5048, 6310, 6800, 8500, 10096, 10727, 12620, 15775, 17000, 21454, 25240, 31550, 34000, 42908, 50480, 53635, 63100, 78875, 85816, 107270, 126200, 157750, 171632, 214540, 252400, 268175, 315500, 429080, 536350, 631000, 858160, 1072700, 1262000, 1340875, 2145400, 2681750, 4290800, 5363500, 10727000, 21454000]

約数ペア:

[(1, 21454000), (2, 10727000), (4, 5363500), (5, 4290800), (8, 2681750), (10, 2145400), (16, 1340875), (17, 1262000), (20, 1072700), (25, 858160), (34, 631000), (40, 536350), (50, 429080), (68, 315500), (80, 268175), (85, 252400), (100, 214540), (125, 171632), (136, 157750), (170, 126200), (200, 107270), (250, 85816), (272, 78875), (340, 63100), (400, 53635), (425, 50480), (500, 42908), (631, 34000), (680, 31550), (850, 25240), (1000, 21454), (1262, 17000), (1360, 15775), (1700, 12620), (2000, 10727), (2125, 10096), (2524, 8500), (3155, 6800), (3400, 6310), (4250, 5048)]