138302720

素因数分解:

$2^8\times 5^1\times {\mathrm{167}}^1\times {\mathrm{647}}^1$

素因数の和:835

約数の個数: 72

約数和(自身を含む): 333777024

約数和(自身を除く): 195474304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 167, 256, 320, 334, 640, 647, 668, 835, 1280, 1294, 1336, 1670, 2588, 2672, 3235, 3340, 5176, 5344, 6470, 6680, 10352, 10688, 12940, 13360, 20704, 21376, 25880, 26720, 41408, 42752, 51760, 53440, 82816, 103520, 106880, 108049, 165632, 207040, 213760, 216098, 414080, 432196, 540245, 828160, 864392, 1080490, 1728784, 2160980, 3457568, 4321960, 6915136, 8643920, 13830272, 17287840, 27660544, 34575680, 69151360, 138302720]

約数ペア:

[(1, 138302720), (2, 69151360), (4, 34575680), (5, 27660544), (8, 17287840), (10, 13830272), (16, 8643920), (20, 6915136), (32, 4321960), (40, 3457568), (64, 2160980), (80, 1728784), (128, 1080490), (160, 864392), (167, 828160), (256, 540245), (320, 432196), (334, 414080), (640, 216098), (647, 213760), (668, 207040), (835, 165632), (1280, 108049), (1294, 106880), (1336, 103520), (1670, 82816), (2588, 53440), (2672, 51760), (3235, 42752), (3340, 41408), (5176, 26720), (5344, 25880), (6470, 21376), (6680, 20704), (10352, 13360), (10688, 12940)]