18236560

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:212

約数の個数: 80

約数和(自身を含む): 44698032

約数和(自身を除く): 26461472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 61, 74, 80, 101, 122, 148, 185, 202, 244, 296, 305, 370, 404, 488, 505, 592, 610, 740, 808, 976, 1010, 1220, 1480, 1616, 2020, 2257, 2440, 2960, 3737, 4040, 4514, 4880, 6161, 7474, 8080, 9028, 11285, 12322, 14948, 18056, 18685, 22570, 24644, 29896, 30805, 36112, 37370, 45140, 49288, 59792, 61610, 74740, 90280, 98576, 123220, 149480, 180560, 227957, 246440, 298960, 455914, 492880, 911828, 1139785, 1823656, 2279570, 3647312, 4559140, 9118280, 18236560]

約数ペア:

[(1, 18236560), (2, 9118280), (4, 4559140), (5, 3647312), (8, 2279570), (10, 1823656), (16, 1139785), (20, 911828), (37, 492880), (40, 455914), (61, 298960), (74, 246440), (80, 227957), (101, 180560), (122, 149480), (148, 123220), (185, 98576), (202, 90280), (244, 74740), (296, 61610), (305, 59792), (370, 49288), (404, 45140), (488, 37370), (505, 36112), (592, 30805), (610, 29896), (740, 24644), (808, 22570), (976, 18685), (1010, 18056), (1220, 14948), (1480, 12322), (1616, 11285), (2020, 9028), (2257, 8080), (2440, 7474), (2960, 6161), (3737, 4880), (4040, 4514)]