25625000

素因数分解:

$2^3\times 5^7\times {\mathrm{41}}^1$

素因数の和:82

約数の個数: 64

約数和(自身を含む): 61523280

約数和(自身を除く): 35898280

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 82, 100, 125, 164, 200, 205, 250, 328, 410, 500, 625, 820, 1000, 1025, 1250, 1640, 2050, 2500, 3125, 4100, 5000, 5125, 6250, 8200, 10250, 12500, 15625, 20500, 25000, 25625, 31250, 41000, 51250, 62500, 78125, 102500, 125000, 128125, 156250, 205000, 256250, 312500, 512500, 625000, 640625, 1025000, 1281250, 2562500, 3203125, 5125000, 6406250, 12812500, 25625000]

約数ペア:

[(1, 25625000), (2, 12812500), (4, 6406250), (5, 5125000), (8, 3203125), (10, 2562500), (20, 1281250), (25, 1025000), (40, 640625), (41, 625000), (50, 512500), (82, 312500), (100, 256250), (125, 205000), (164, 156250), (200, 128125), (205, 125000), (250, 102500), (328, 78125), (410, 62500), (500, 51250), (625, 41000), (820, 31250), (1000, 25625), (1025, 25000), (1250, 20500), (1640, 15625), (2050, 12500), (2500, 10250), (3125, 8200), (4100, 6250), (5000, 5125)]