21625000

素因数分解:

$2^3\times 5^6\times {\mathrm{173}}^1$

素因数の和:209

約数の個数: 56

約数和(自身を含む): 50975910

約数和(自身を除く): 29350910

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 173, 200, 250, 346, 500, 625, 692, 865, 1000, 1250, 1384, 1730, 2500, 3125, 3460, 4325, 5000, 6250, 6920, 8650, 12500, 15625, 17300, 21625, 25000, 31250, 34600, 43250, 62500, 86500, 108125, 125000, 173000, 216250, 432500, 540625, 865000, 1081250, 2162500, 2703125, 4325000, 5406250, 10812500, 21625000]

約数ペア:

[(1, 21625000), (2, 10812500), (4, 5406250), (5, 4325000), (8, 2703125), (10, 2162500), (20, 1081250), (25, 865000), (40, 540625), (50, 432500), (100, 216250), (125, 173000), (173, 125000), (200, 108125), (250, 86500), (346, 62500), (500, 43250), (625, 34600), (692, 31250), (865, 25000), (1000, 21625), (1250, 17300), (1384, 15625), (1730, 12500), (2500, 8650), (3125, 6920), (3460, 6250), (4325, 5000)]