20835968

素因数分解:

$2^7\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:193

約数の個数: 64

約数和(自身を含む): 44064000

約数和(自身を除く): 23228032

約数列:

[1, 2, 4, 8, 16, 31, 32, 59, 62, 64, 89, 118, 124, 128, 178, 236, 248, 356, 472, 496, 712, 944, 992, 1424, 1829, 1888, 1984, 2759, 2848, 3658, 3776, 3968, 5251, 5518, 5696, 7316, 7552, 10502, 11036, 11392, 14632, 21004, 22072, 29264, 42008, 44144, 58528, 84016, 88288, 117056, 162781, 168032, 176576, 234112, 325562, 336064, 353152, 651124, 672128, 1302248, 2604496, 5208992, 10417984, 20835968]

約数ペア:

[(1, 20835968), (2, 10417984), (4, 5208992), (8, 2604496), (16, 1302248), (31, 672128), (32, 651124), (59, 353152), (62, 336064), (64, 325562), (89, 234112), (118, 176576), (124, 168032), (128, 162781), (178, 117056), (236, 88288), (248, 84016), (356, 58528), (472, 44144), (496, 42008), (712, 29264), (944, 22072), (992, 21004), (1424, 14632), (1829, 11392), (1888, 11036), (1984, 10502), (2759, 7552), (2848, 7316), (3658, 5696), (3776, 5518), (3968, 5251)]