20416500

素因数分解:

$2^2\times 3^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{349}}^1$

素因数の和:387

約数の個数: 144

約数和(自身を含む): 69560400

約数和(自身を除く): 49143900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 25, 26, 30, 36, 39, 45, 50, 52, 60, 65, 75, 78, 90, 100, 117, 125, 130, 150, 156, 180, 195, 225, 234, 250, 260, 300, 325, 349, 375, 390, 450, 468, 500, 585, 650, 698, 750, 780, 900, 975, 1047, 1125, 1170, 1300, 1396, 1500, 1625, 1745, 1950, 2094, 2250, 2340, 2925, 3141, 3250, 3490, 3900, 4188, 4500, 4537, 4875, 5235, 5850, 6282, 6500, 6980, 8725, 9074, 9750, 10470, 11700, 12564, 13611, 14625, 15705, 17450, 18148, 19500, 20940, 22685, 26175, 27222, 29250, 31410, 34900, 40833, 43625, 45370, 52350, 54444, 58500, 62820, 68055, 78525, 81666, 87250, 90740, 104700, 113425, 130875, 136110, 157050, 163332, 174500, 204165, 226850, 261750, 272220, 314100, 340275, 392625, 408330, 453700, 523500, 567125, 680550, 785250, 816660, 1020825, 1134250, 1361100, 1570500, 1701375, 2041650, 2268500, 3402750, 4083300, 5104125, 6805500, 10208250, 20416500]

約数ペア:

[(1, 20416500), (2, 10208250), (3, 6805500), (4, 5104125), (5, 4083300), (6, 3402750), (9, 2268500), (10, 2041650), (12, 1701375), (13, 1570500), (15, 1361100), (18, 1134250), (20, 1020825), (25, 816660), (26, 785250), (30, 680550), (36, 567125), (39, 523500), (45, 453700), (50, 408330), (52, 392625), (60, 340275), (65, 314100), (75, 272220), (78, 261750), (90, 226850), (100, 204165), (117, 174500), (125, 163332), (130, 157050), (150, 136110), (156, 130875), (180, 113425), (195, 104700), (225, 90740), (234, 87250), (250, 81666), (260, 78525), (300, 68055), (325, 62820), (349, 58500), (375, 54444), (390, 52350), (450, 45370), (468, 43625), (500, 40833), (585, 34900), (650, 31410), (698, 29250), (750, 27222), (780, 26175), (900, 22685), (975, 20940), (1047, 19500), (1125, 18148), (1170, 17450), (1300, 15705), (1396, 14625), (1500, 13611), (1625, 12564), (1745, 11700), (1950, 10470), (2094, 9750), (2250, 9074), (2340, 8725), (2925, 6980), (3141, 6500), (3250, 6282), (3490, 5850), (3900, 5235), (4188, 4875), (4500, 4537)]