28270720

素因数分解:

$2^7\times 5^1\times {\mathrm{163}}^1\times {\mathrm{271}}^1$

素因数の和:453

約数の個数: 64

約数和(自身を含む): 68250240

約数和(自身を除く): 39979520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 163, 271, 320, 326, 542, 640, 652, 815, 1084, 1304, 1355, 1630, 2168, 2608, 2710, 3260, 4336, 5216, 5420, 6520, 8672, 10432, 10840, 13040, 17344, 20864, 21680, 26080, 34688, 43360, 44173, 52160, 86720, 88346, 104320, 173440, 176692, 220865, 353384, 441730, 706768, 883460, 1413536, 1766920, 2827072, 3533840, 5654144, 7067680, 14135360, 28270720]

約数ペア:

[(1, 28270720), (2, 14135360), (4, 7067680), (5, 5654144), (8, 3533840), (10, 2827072), (16, 1766920), (20, 1413536), (32, 883460), (40, 706768), (64, 441730), (80, 353384), (128, 220865), (160, 176692), (163, 173440), (271, 104320), (320, 88346), (326, 86720), (542, 52160), (640, 44173), (652, 43360), (815, 34688), (1084, 26080), (1304, 21680), (1355, 20864), (1630, 17344), (2168, 13040), (2608, 10840), (2710, 10432), (3260, 8672), (4336, 6520), (5216, 5420)]