256280720

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{4493}}^1$

素因数の和:4560

約数の個数: 80

約数和(自身を含む): 641958912

約数和(自身を除く): 385678192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 40, 46, 62, 80, 92, 115, 124, 155, 184, 230, 248, 310, 368, 460, 496, 620, 713, 920, 1240, 1426, 1840, 2480, 2852, 3565, 4493, 5704, 7130, 8986, 11408, 14260, 17972, 22465, 28520, 35944, 44930, 57040, 71888, 89860, 103339, 139283, 179720, 206678, 278566, 359440, 413356, 516695, 557132, 696415, 826712, 1033390, 1114264, 1392830, 1653424, 2066780, 2228528, 2785660, 3203509, 4133560, 5571320, 6407018, 8267120, 11142640, 12814036, 16017545, 25628072, 32035090, 51256144, 64070180, 128140360, 256280720]

約数ペア:

[(1, 256280720), (2, 128140360), (4, 64070180), (5, 51256144), (8, 32035090), (10, 25628072), (16, 16017545), (20, 12814036), (23, 11142640), (31, 8267120), (40, 6407018), (46, 5571320), (62, 4133560), (80, 3203509), (92, 2785660), (115, 2228528), (124, 2066780), (155, 1653424), (184, 1392830), (230, 1114264), (248, 1033390), (310, 826712), (368, 696415), (460, 557132), (496, 516695), (620, 413356), (713, 359440), (920, 278566), (1240, 206678), (1426, 179720), (1840, 139283), (2480, 103339), (2852, 89860), (3565, 71888), (4493, 57040), (5704, 44930), (7130, 35944), (8986, 28520), (11408, 22465), (14260, 17972)]