21980700

素因数分解:

$2^2\times 3^3\times 5^2\times 7^1\times {\mathrm{1163}}^1$

素因数の和:1193

約数の個数: 144

約数和(自身を含む): 80828160

約数和(自身を除く): 58847460

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, 1163, 1260, 1350, 1575, 1890, 2100, 2326, 2700, 3150, 3489, 3780, 4652, 4725, 5815, 6300, 6978, 8141, 9450, 10467, 11630, 13956, 16282, 17445, 18900, 20934, 23260, 24423, 29075, 31401, 32564, 34890, 40705, 41868, 48846, 52335, 58150, 62802, 69780, 73269, 81410, 87225, 97692, 104670, 116300, 122115, 125604, 146538, 157005, 162820, 174450, 203525, 209340, 219807, 244230, 261675, 293076, 314010, 348900, 366345, 407050, 439614, 488460, 523350, 610575, 628020, 732690, 785025, 814100, 879228, 1046700, 1099035, 1221150, 1465380, 1570050, 1831725, 2198070, 2442300, 3140100, 3663450, 4396140, 5495175, 7326900, 10990350, 21980700]

約数ペア:

[(1, 21980700), (2, 10990350), (3, 7326900), (4, 5495175), (5, 4396140), (6, 3663450), (7, 3140100), (9, 2442300), (10, 2198070), (12, 1831725), (14, 1570050), (15, 1465380), (18, 1221150), (20, 1099035), (21, 1046700), (25, 879228), (27, 814100), (28, 785025), (30, 732690), (35, 628020), (36, 610575), (42, 523350), (45, 488460), (50, 439614), (54, 407050), (60, 366345), (63, 348900), (70, 314010), (75, 293076), (84, 261675), (90, 244230), (100, 219807), (105, 209340), (108, 203525), (126, 174450), (135, 162820), (140, 157005), (150, 146538), (175, 125604), (180, 122115), (189, 116300), (210, 104670), (225, 97692), (252, 87225), (270, 81410), (300, 73269), (315, 69780), (350, 62802), (378, 58150), (420, 52335), (450, 48846), (525, 41868), (540, 40705), (630, 34890), (675, 32564), (700, 31401), (756, 29075), (900, 24423), (945, 23260), (1050, 20934), (1163, 18900), (1260, 17445), (1350, 16282), (1575, 13956), (1890, 11630), (2100, 10467), (2326, 9450), (2700, 8141), (3150, 6978), (3489, 6300), (3780, 5815), (4652, 4725)]