21250740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2663}}^1$

素因数の和:2701

約数の個数: 96

約数和(自身を含む): 71608320

約数和(自身を除く): 50357580

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 57, 60, 70, 76, 84, 95, 105, 114, 133, 140, 190, 210, 228, 266, 285, 380, 399, 420, 532, 570, 665, 798, 1140, 1330, 1596, 1995, 2660, 2663, 3990, 5326, 7980, 7989, 10652, 13315, 15978, 18641, 26630, 31956, 37282, 39945, 50597, 53260, 55923, 74564, 79890, 93205, 101194, 111846, 151791, 159780, 186410, 202388, 223692, 252985, 279615, 303582, 354179, 372820, 505970, 559230, 607164, 708358, 758955, 1011940, 1062537, 1118460, 1416716, 1517910, 1770895, 2125074, 3035820, 3541790, 4250148, 5312685, 7083580, 10625370, 21250740]

約数ペア:

[(1, 21250740), (2, 10625370), (3, 7083580), (4, 5312685), (5, 4250148), (6, 3541790), (7, 3035820), (10, 2125074), (12, 1770895), (14, 1517910), (15, 1416716), (19, 1118460), (20, 1062537), (21, 1011940), (28, 758955), (30, 708358), (35, 607164), (38, 559230), (42, 505970), (57, 372820), (60, 354179), (70, 303582), (76, 279615), (84, 252985), (95, 223692), (105, 202388), (114, 186410), (133, 159780), (140, 151791), (190, 111846), (210, 101194), (228, 93205), (266, 79890), (285, 74564), (380, 55923), (399, 53260), (420, 50597), (532, 39945), (570, 37282), (665, 31956), (798, 26630), (1140, 18641), (1330, 15978), (1596, 13315), (1995, 10652), (2660, 7989), (2663, 7980), (3990, 5326)]