9840520

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:218

約数の個数: 64

約数和(自身を含む): 23324400

約数和(自身を除く): 13483880

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 61, 74, 109, 122, 148, 185, 218, 244, 296, 305, 370, 436, 488, 545, 610, 740, 872, 1090, 1220, 1480, 2180, 2257, 2440, 4033, 4360, 4514, 6649, 8066, 9028, 11285, 13298, 16132, 18056, 20165, 22570, 26596, 32264, 33245, 40330, 45140, 53192, 66490, 80660, 90280, 132980, 161320, 246013, 265960, 492026, 984052, 1230065, 1968104, 2460130, 4920260, 9840520]

約数ペア:

[(1, 9840520), (2, 4920260), (4, 2460130), (5, 1968104), (8, 1230065), (10, 984052), (20, 492026), (37, 265960), (40, 246013), (61, 161320), (74, 132980), (109, 90280), (122, 80660), (148, 66490), (185, 53192), (218, 45140), (244, 40330), (296, 33245), (305, 32264), (370, 26596), (436, 22570), (488, 20165), (545, 18056), (610, 16132), (740, 13298), (872, 11285), (1090, 9028), (1220, 8066), (1480, 6649), (2180, 4514), (2257, 4360), (2440, 4033)]