20458016

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{503}}^1$

素因数の和:585

約数の個数: 48

約数和(自身を含む): 42674688

約数和(自身を除く): 22216672

約数列:

[1, 2, 4, 8, 16, 31, 32, 41, 62, 82, 124, 164, 248, 328, 496, 503, 656, 992, 1006, 1271, 1312, 2012, 2542, 4024, 5084, 8048, 10168, 15593, 16096, 20336, 20623, 31186, 40672, 41246, 62372, 82492, 124744, 164984, 249488, 329968, 498976, 639313, 659936, 1278626, 2557252, 5114504, 10229008, 20458016]

約数ペア:

[(1, 20458016), (2, 10229008), (4, 5114504), (8, 2557252), (16, 1278626), (31, 659936), (32, 639313), (41, 498976), (62, 329968), (82, 249488), (124, 164984), (164, 124744), (248, 82492), (328, 62372), (496, 41246), (503, 40672), (656, 31186), (992, 20623), (1006, 20336), (1271, 16096), (1312, 15593), (2012, 10168), (2542, 8048), (4024, 5084)]