18993040

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{191}}^1$

素因数の和:328

約数の個数: 80

約数和(自身を含む): 48854016

約数和(自身を除く): 29860976

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 113, 176, 191, 220, 226, 382, 440, 452, 565, 764, 880, 904, 955, 1130, 1243, 1528, 1808, 1910, 2101, 2260, 2486, 3056, 3820, 4202, 4520, 4972, 6215, 7640, 8404, 9040, 9944, 10505, 12430, 15280, 16808, 19888, 21010, 21583, 24860, 33616, 42020, 43166, 49720, 84040, 86332, 99440, 107915, 168080, 172664, 215830, 237413, 345328, 431660, 474826, 863320, 949652, 1187065, 1726640, 1899304, 2374130, 3798608, 4748260, 9496520, 18993040]

約数ペア:

[(1, 18993040), (2, 9496520), (4, 4748260), (5, 3798608), (8, 2374130), (10, 1899304), (11, 1726640), (16, 1187065), (20, 949652), (22, 863320), (40, 474826), (44, 431660), (55, 345328), (80, 237413), (88, 215830), (110, 172664), (113, 168080), (176, 107915), (191, 99440), (220, 86332), (226, 84040), (382, 49720), (440, 43166), (452, 42020), (565, 33616), (764, 24860), (880, 21583), (904, 21010), (955, 19888), (1130, 16808), (1243, 15280), (1528, 12430), (1808, 10505), (1910, 9944), (2101, 9040), (2260, 8404), (2486, 7640), (3056, 6215), (3820, 4972), (4202, 4520)]