21443000

素因数分解:

$2^3\times 5^3\times {\mathrm{41}}^1\times {\mathrm{523}}^1$

素因数の和:585

約数の個数: 64

約数和(自身を含む): 51498720

約数和(自身を除く): 30055720

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 82, 100, 125, 164, 200, 205, 250, 328, 410, 500, 523, 820, 1000, 1025, 1046, 1640, 2050, 2092, 2615, 4100, 4184, 5125, 5230, 8200, 10250, 10460, 13075, 20500, 20920, 21443, 26150, 41000, 42886, 52300, 65375, 85772, 104600, 107215, 130750, 171544, 214430, 261500, 428860, 523000, 536075, 857720, 1072150, 2144300, 2680375, 4288600, 5360750, 10721500, 21443000]

約数ペア:

[(1, 21443000), (2, 10721500), (4, 5360750), (5, 4288600), (8, 2680375), (10, 2144300), (20, 1072150), (25, 857720), (40, 536075), (41, 523000), (50, 428860), (82, 261500), (100, 214430), (125, 171544), (164, 130750), (200, 107215), (205, 104600), (250, 85772), (328, 65375), (410, 52300), (500, 42886), (523, 41000), (820, 26150), (1000, 21443), (1025, 20920), (1046, 20500), (1640, 13075), (2050, 10460), (2092, 10250), (2615, 8200), (4100, 5230), (4184, 5125)]