20978300

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1303}}^1$

素因数の和:1347

約数の個数: 72

約数和(自身を含む): 54329856

約数和(自身を除く): 33351556

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 25, 28, 35, 46, 50, 70, 92, 100, 115, 140, 161, 175, 230, 322, 350, 460, 575, 644, 700, 805, 1150, 1303, 1610, 2300, 2606, 3220, 4025, 5212, 6515, 8050, 9121, 13030, 16100, 18242, 26060, 29969, 32575, 36484, 45605, 59938, 65150, 91210, 119876, 130300, 149845, 182420, 209783, 228025, 299690, 419566, 456050, 599380, 749225, 839132, 912100, 1048915, 1498450, 2097830, 2996900, 4195660, 5244575, 10489150, 20978300]

約数ペア:

[(1, 20978300), (2, 10489150), (4, 5244575), (5, 4195660), (7, 2996900), (10, 2097830), (14, 1498450), (20, 1048915), (23, 912100), (25, 839132), (28, 749225), (35, 599380), (46, 456050), (50, 419566), (70, 299690), (92, 228025), (100, 209783), (115, 182420), (140, 149845), (161, 130300), (175, 119876), (230, 91210), (322, 65150), (350, 59938), (460, 45605), (575, 36484), (644, 32575), (700, 29969), (805, 26060), (1150, 18242), (1303, 16100), (1610, 13030), (2300, 9121), (2606, 8050), (3220, 6515), (4025, 5212)]