28077080

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{311}}^1$

素因数の和:420

約数の個数: 64

約数和(自身を含む): 66156480

約数和(自身を除く): 38079400

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 61, 74, 122, 148, 185, 244, 296, 305, 311, 370, 488, 610, 622, 740, 1220, 1244, 1480, 1555, 2257, 2440, 2488, 3110, 4514, 6220, 9028, 11285, 11507, 12440, 18056, 18971, 22570, 23014, 37942, 45140, 46028, 57535, 75884, 90280, 92056, 94855, 115070, 151768, 189710, 230140, 379420, 460280, 701927, 758840, 1403854, 2807708, 3509635, 5615416, 7019270, 14038540, 28077080]

約数ペア:

[(1, 28077080), (2, 14038540), (4, 7019270), (5, 5615416), (8, 3509635), (10, 2807708), (20, 1403854), (37, 758840), (40, 701927), (61, 460280), (74, 379420), (122, 230140), (148, 189710), (185, 151768), (244, 115070), (296, 94855), (305, 92056), (311, 90280), (370, 75884), (488, 57535), (610, 46028), (622, 45140), (740, 37942), (1220, 23014), (1244, 22570), (1480, 18971), (1555, 18056), (2257, 12440), (2440, 11507), (2488, 11285), (3110, 9028), (4514, 6220)]