20482816

素因数分解:

$2^8\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:165

約数の個数: 72

約数和(自身を含む): 44150400

約数和(自身を除く): 23667584

約数列:

[1, 2, 4, 8, 16, 29, 31, 32, 58, 62, 64, 89, 116, 124, 128, 178, 232, 248, 256, 356, 464, 496, 712, 899, 928, 992, 1424, 1798, 1856, 1984, 2581, 2759, 2848, 3596, 3712, 3968, 5162, 5518, 5696, 7192, 7424, 7936, 10324, 11036, 11392, 14384, 20648, 22072, 22784, 28768, 41296, 44144, 57536, 80011, 82592, 88288, 115072, 160022, 165184, 176576, 230144, 320044, 330368, 353152, 640088, 660736, 706304, 1280176, 2560352, 5120704, 10241408, 20482816]

約数ペア:

[(1, 20482816), (2, 10241408), (4, 5120704), (8, 2560352), (16, 1280176), (29, 706304), (31, 660736), (32, 640088), (58, 353152), (62, 330368), (64, 320044), (89, 230144), (116, 176576), (124, 165184), (128, 160022), (178, 115072), (232, 88288), (248, 82592), (256, 80011), (356, 57536), (464, 44144), (496, 41296), (712, 28768), (899, 22784), (928, 22072), (992, 20648), (1424, 14384), (1798, 11392), (1856, 11036), (1984, 10324), (2581, 7936), (2759, 7424), (2848, 7192), (3596, 5696), (3712, 5518), (3968, 5162)]