20619900

素因数分解:

$2^2\times 3^3\times 5^2\times 7^1\times {\mathrm{1091}}^1$

素因数の和:1121

約数の個数: 144

約数和(自身を含む): 75828480

約数和(自身を除く): 55208580

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 25, 27, 28, 30, 35, 36, 42, 45, 50, 54, 60, 63, 70, 75, 84, 90, 100, 105, 108, 126, 135, 140, 150, 175, 180, 189, 210, 225, 252, 270, 300, 315, 350, 378, 420, 450, 525, 540, 630, 675, 700, 756, 900, 945, 1050, 1091, 1260, 1350, 1575, 1890, 2100, 2182, 2700, 3150, 3273, 3780, 4364, 4725, 5455, 6300, 6546, 7637, 9450, 9819, 10910, 13092, 15274, 16365, 18900, 19638, 21820, 22911, 27275, 29457, 30548, 32730, 38185, 39276, 45822, 49095, 54550, 58914, 65460, 68733, 76370, 81825, 91644, 98190, 109100, 114555, 117828, 137466, 147285, 152740, 163650, 190925, 196380, 206199, 229110, 245475, 274932, 294570, 327300, 343665, 381850, 412398, 458220, 490950, 572775, 589140, 687330, 736425, 763700, 824796, 981900, 1030995, 1145550, 1374660, 1472850, 1718325, 2061990, 2291100, 2945700, 3436650, 4123980, 5154975, 6873300, 10309950, 20619900]

約数ペア:

[(1, 20619900), (2, 10309950), (3, 6873300), (4, 5154975), (5, 4123980), (6, 3436650), (7, 2945700), (9, 2291100), (10, 2061990), (12, 1718325), (14, 1472850), (15, 1374660), (18, 1145550), (20, 1030995), (21, 981900), (25, 824796), (27, 763700), (28, 736425), (30, 687330), (35, 589140), (36, 572775), (42, 490950), (45, 458220), (50, 412398), (54, 381850), (60, 343665), (63, 327300), (70, 294570), (75, 274932), (84, 245475), (90, 229110), (100, 206199), (105, 196380), (108, 190925), (126, 163650), (135, 152740), (140, 147285), (150, 137466), (175, 117828), (180, 114555), (189, 109100), (210, 98190), (225, 91644), (252, 81825), (270, 76370), (300, 68733), (315, 65460), (350, 58914), (378, 54550), (420, 49095), (450, 45822), (525, 39276), (540, 38185), (630, 32730), (675, 30548), (700, 29457), (756, 27275), (900, 22911), (945, 21820), (1050, 19638), (1091, 18900), (1260, 16365), (1350, 15274), (1575, 13092), (1890, 10910), (2100, 9819), (2182, 9450), (2700, 7637), (3150, 6546), (3273, 6300), (3780, 5455), (4364, 4725)]