28387980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{6857}}^1$

素因数の和:6895

約数の個数: 72

約数和(自身を含む): 89867232

約数和(自身を除く): 61479252

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 6857, 13714, 20571, 27428, 34285, 41142, 61713, 68570, 82284, 102855, 123426, 137140, 157711, 205710, 246852, 308565, 315422, 411420, 473133, 617130, 630844, 788555, 946266, 1234260, 1419399, 1577110, 1892532, 2365665, 2838798, 3154220, 4731330, 5677596, 7096995, 9462660, 14193990, 28387980]

約数ペア:

[(1, 28387980), (2, 14193990), (3, 9462660), (4, 7096995), (5, 5677596), (6, 4731330), (9, 3154220), (10, 2838798), (12, 2365665), (15, 1892532), (18, 1577110), (20, 1419399), (23, 1234260), (30, 946266), (36, 788555), (45, 630844), (46, 617130), (60, 473133), (69, 411420), (90, 315422), (92, 308565), (115, 246852), (138, 205710), (180, 157711), (207, 137140), (230, 123426), (276, 102855), (345, 82284), (414, 68570), (460, 61713), (690, 41142), (828, 34285), (1035, 27428), (1380, 20571), (2070, 13714), (4140, 6857)]