18786560

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1129}}^1$

素因数の和:1163

約数の個数: 72

約数和(自身を含む): 48504120

約数和(自身を除く): 29717560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 832, 1040, 1129, 1280, 1664, 2080, 2258, 3328, 4160, 4516, 5645, 8320, 9032, 11290, 14677, 16640, 18064, 22580, 29354, 36128, 45160, 58708, 72256, 73385, 90320, 117416, 144512, 146770, 180640, 234832, 289024, 293540, 361280, 469664, 587080, 722560, 939328, 1174160, 1445120, 1878656, 2348320, 3757312, 4696640, 9393280, 18786560]

約数ペア:

[(1, 18786560), (2, 9393280), (4, 4696640), (5, 3757312), (8, 2348320), (10, 1878656), (13, 1445120), (16, 1174160), (20, 939328), (26, 722560), (32, 587080), (40, 469664), (52, 361280), (64, 293540), (65, 289024), (80, 234832), (104, 180640), (128, 146770), (130, 144512), (160, 117416), (208, 90320), (256, 73385), (260, 72256), (320, 58708), (416, 45160), (520, 36128), (640, 29354), (832, 22580), (1040, 18064), (1129, 16640), (1280, 14677), (1664, 11290), (2080, 9032), (2258, 8320), (3328, 5645), (4160, 4516)]