78211120

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{479}}^1$

素因数の和:662

約数の個数: 80

約数和(自身を含む): 197487360

約数和(自身を除く): 119276240

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 157, 208, 260, 314, 479, 520, 628, 785, 958, 1040, 1256, 1570, 1916, 2041, 2395, 2512, 3140, 3832, 4082, 4790, 6227, 6280, 7664, 8164, 9580, 10205, 12454, 12560, 16328, 19160, 20410, 24908, 31135, 32656, 38320, 40820, 49816, 62270, 75203, 81640, 99632, 124540, 150406, 163280, 249080, 300812, 376015, 498160, 601624, 752030, 977639, 1203248, 1504060, 1955278, 3008120, 3910556, 4888195, 6016240, 7821112, 9776390, 15642224, 19552780, 39105560, 78211120]

約数ペア:

[(1, 78211120), (2, 39105560), (4, 19552780), (5, 15642224), (8, 9776390), (10, 7821112), (13, 6016240), (16, 4888195), (20, 3910556), (26, 3008120), (40, 1955278), (52, 1504060), (65, 1203248), (80, 977639), (104, 752030), (130, 601624), (157, 498160), (208, 376015), (260, 300812), (314, 249080), (479, 163280), (520, 150406), (628, 124540), (785, 99632), (958, 81640), (1040, 75203), (1256, 62270), (1570, 49816), (1916, 40820), (2041, 38320), (2395, 32656), (2512, 31135), (3140, 24908), (3832, 20410), (4082, 19160), (4790, 16328), (6227, 12560), (6280, 12454), (7664, 10205), (8164, 9580)]