81433280

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8209}}^1$

素因数の和:8257

約数の個数: 56

約数和(自身を含む): 200192640

約数和(自身を除く): 118759360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2480, 4960, 8209, 9920, 16418, 32836, 41045, 65672, 82090, 131344, 164180, 254479, 262688, 328360, 508958, 525376, 656720, 1017916, 1272395, 1313440, 2035832, 2544790, 2626880, 4071664, 5089580, 8143328, 10179160, 16286656, 20358320, 40716640, 81433280]

約数ペア:

[(1, 81433280), (2, 40716640), (4, 20358320), (5, 16286656), (8, 10179160), (10, 8143328), (16, 5089580), (20, 4071664), (31, 2626880), (32, 2544790), (40, 2035832), (62, 1313440), (64, 1272395), (80, 1017916), (124, 656720), (155, 525376), (160, 508958), (248, 328360), (310, 262688), (320, 254479), (496, 164180), (620, 131344), (992, 82090), (1240, 65672), (1984, 41045), (2480, 32836), (4960, 16418), (8209, 9920)]