21191400

素因数分解:

$2^3\times 3^2\times 5^2\times {\mathrm{61}}^1\times {\mathrm{193}}^1$

素因数の和:276

約数の個数: 144

約数和(自身を含む): 72709260

約数和(自身を除く): 51517860

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 30, 36, 40, 45, 50, 60, 61, 72, 75, 90, 100, 120, 122, 150, 180, 183, 193, 200, 225, 244, 300, 305, 360, 366, 386, 450, 488, 549, 579, 600, 610, 732, 772, 900, 915, 965, 1098, 1158, 1220, 1464, 1525, 1544, 1737, 1800, 1830, 1930, 2196, 2316, 2440, 2745, 2895, 3050, 3474, 3660, 3860, 4392, 4575, 4632, 4825, 5490, 5790, 6100, 6948, 7320, 7720, 8685, 9150, 9650, 10980, 11580, 11773, 12200, 13725, 13896, 14475, 17370, 18300, 19300, 21960, 23160, 23546, 27450, 28950, 34740, 35319, 36600, 38600, 43425, 47092, 54900, 57900, 58865, 69480, 70638, 86850, 94184, 105957, 109800, 115800, 117730, 141276, 173700, 176595, 211914, 235460, 282552, 294325, 347400, 353190, 423828, 470920, 529785, 588650, 706380, 847656, 882975, 1059570, 1177300, 1412760, 1765950, 2119140, 2354600, 2648925, 3531900, 4238280, 5297850, 7063800, 10595700, 21191400]

約数ペア:

[(1, 21191400), (2, 10595700), (3, 7063800), (4, 5297850), (5, 4238280), (6, 3531900), (8, 2648925), (9, 2354600), (10, 2119140), (12, 1765950), (15, 1412760), (18, 1177300), (20, 1059570), (24, 882975), (25, 847656), (30, 706380), (36, 588650), (40, 529785), (45, 470920), (50, 423828), (60, 353190), (61, 347400), (72, 294325), (75, 282552), (90, 235460), (100, 211914), (120, 176595), (122, 173700), (150, 141276), (180, 117730), (183, 115800), (193, 109800), (200, 105957), (225, 94184), (244, 86850), (300, 70638), (305, 69480), (360, 58865), (366, 57900), (386, 54900), (450, 47092), (488, 43425), (549, 38600), (579, 36600), (600, 35319), (610, 34740), (732, 28950), (772, 27450), (900, 23546), (915, 23160), (965, 21960), (1098, 19300), (1158, 18300), (1220, 17370), (1464, 14475), (1525, 13896), (1544, 13725), (1737, 12200), (1800, 11773), (1830, 11580), (1930, 10980), (2196, 9650), (2316, 9150), (2440, 8685), (2745, 7720), (2895, 7320), (3050, 6948), (3474, 6100), (3660, 5790), (3860, 5490), (4392, 4825), (4575, 4632)]