21407400

素因数分解:

$2^3\times 3^2\times 5^2\times 7^1\times {\mathrm{1699}}^1$

素因数の和:1728

約数の個数: 144

約数和(自身を含む): 82212000

約数和(自身を除く): 60804600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 25, 28, 30, 35, 36, 40, 42, 45, 50, 56, 60, 63, 70, 72, 75, 84, 90, 100, 105, 120, 126, 140, 150, 168, 175, 180, 200, 210, 225, 252, 280, 300, 315, 350, 360, 420, 450, 504, 525, 600, 630, 700, 840, 900, 1050, 1260, 1400, 1575, 1699, 1800, 2100, 2520, 3150, 3398, 4200, 5097, 6300, 6796, 8495, 10194, 11893, 12600, 13592, 15291, 16990, 20388, 23786, 25485, 30582, 33980, 35679, 40776, 42475, 47572, 50970, 59465, 61164, 67960, 71358, 76455, 84950, 95144, 101940, 107037, 118930, 122328, 127425, 142716, 152910, 169900, 178395, 203880, 214074, 237860, 254850, 285432, 297325, 305820, 339800, 356790, 382275, 428148, 475720, 509700, 535185, 594650, 611640, 713580, 764550, 856296, 891975, 1019400, 1070370, 1189300, 1427160, 1529100, 1783950, 2140740, 2378600, 2675925, 3058200, 3567900, 4281480, 5351850, 7135800, 10703700, 21407400]

約数ペア:

[(1, 21407400), (2, 10703700), (3, 7135800), (4, 5351850), (5, 4281480), (6, 3567900), (7, 3058200), (8, 2675925), (9, 2378600), (10, 2140740), (12, 1783950), (14, 1529100), (15, 1427160), (18, 1189300), (20, 1070370), (21, 1019400), (24, 891975), (25, 856296), (28, 764550), (30, 713580), (35, 611640), (36, 594650), (40, 535185), (42, 509700), (45, 475720), (50, 428148), (56, 382275), (60, 356790), (63, 339800), (70, 305820), (72, 297325), (75, 285432), (84, 254850), (90, 237860), (100, 214074), (105, 203880), (120, 178395), (126, 169900), (140, 152910), (150, 142716), (168, 127425), (175, 122328), (180, 118930), (200, 107037), (210, 101940), (225, 95144), (252, 84950), (280, 76455), (300, 71358), (315, 67960), (350, 61164), (360, 59465), (420, 50970), (450, 47572), (504, 42475), (525, 40776), (600, 35679), (630, 33980), (700, 30582), (840, 25485), (900, 23786), (1050, 20388), (1260, 16990), (1400, 15291), (1575, 13592), (1699, 12600), (1800, 11893), (2100, 10194), (2520, 8495), (3150, 6796), (3398, 6300), (4200, 5097)]