18628480

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2239}}^1$

素因数の和:2271

約数の個数: 64

約数和(自身を含む): 47980800

約数和(自身を除く): 29352320

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1664, 2080, 2239, 4160, 4478, 8320, 8956, 11195, 17912, 22390, 29107, 35824, 44780, 58214, 71648, 89560, 116428, 143296, 145535, 179120, 232856, 286592, 291070, 358240, 465712, 582140, 716480, 931424, 1164280, 1432960, 1862848, 2328560, 3725696, 4657120, 9314240, 18628480]

約数ペア:

[(1, 18628480), (2, 9314240), (4, 4657120), (5, 3725696), (8, 2328560), (10, 1862848), (13, 1432960), (16, 1164280), (20, 931424), (26, 716480), (32, 582140), (40, 465712), (52, 358240), (64, 291070), (65, 286592), (80, 232856), (104, 179120), (128, 145535), (130, 143296), (160, 116428), (208, 89560), (260, 71648), (320, 58214), (416, 44780), (520, 35824), (640, 29107), (832, 22390), (1040, 17912), (1664, 11195), (2080, 8956), (2239, 8320), (4160, 4478)]