81301760

素因数分解:

$2^8\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3343}}^1$

素因数の和:3383

約数の個数: 72

約数和(自身を含む): 205054080

約数和(自身を除く): 123752320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 256, 304, 320, 380, 608, 640, 760, 1216, 1280, 1520, 2432, 3040, 3343, 4864, 6080, 6686, 12160, 13372, 16715, 24320, 26744, 33430, 53488, 63517, 66860, 106976, 127034, 133720, 213952, 254068, 267440, 317585, 427904, 508136, 534880, 635170, 855808, 1016272, 1069760, 1270340, 2032544, 2139520, 2540680, 4065088, 4279040, 5081360, 8130176, 10162720, 16260352, 20325440, 40650880, 81301760]

約数ペア:

[(1, 81301760), (2, 40650880), (4, 20325440), (5, 16260352), (8, 10162720), (10, 8130176), (16, 5081360), (19, 4279040), (20, 4065088), (32, 2540680), (38, 2139520), (40, 2032544), (64, 1270340), (76, 1069760), (80, 1016272), (95, 855808), (128, 635170), (152, 534880), (160, 508136), (190, 427904), (256, 317585), (304, 267440), (320, 254068), (380, 213952), (608, 133720), (640, 127034), (760, 106976), (1216, 66860), (1280, 63517), (1520, 53488), (2432, 33430), (3040, 26744), (3343, 24320), (4864, 16715), (6080, 13372), (6686, 12160)]