21003780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1163}}^1$

素因数の和:1225

約数の個数: 96

約数和(自身を含む): 68834304

約数和(自身を除く): 47830524

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 43, 60, 70, 84, 86, 105, 129, 140, 172, 210, 215, 258, 301, 420, 430, 516, 602, 645, 860, 903, 1163, 1204, 1290, 1505, 1806, 2326, 2580, 3010, 3489, 3612, 4515, 4652, 5815, 6020, 6978, 8141, 9030, 11630, 13956, 16282, 17445, 18060, 23260, 24423, 32564, 34890, 40705, 48846, 50009, 69780, 81410, 97692, 100018, 122115, 150027, 162820, 200036, 244230, 250045, 300054, 350063, 488460, 500090, 600108, 700126, 750135, 1000180, 1050189, 1400252, 1500270, 1750315, 2100378, 3000540, 3500630, 4200756, 5250945, 7001260, 10501890, 21003780]

約数ペア:

[(1, 21003780), (2, 10501890), (3, 7001260), (4, 5250945), (5, 4200756), (6, 3500630), (7, 3000540), (10, 2100378), (12, 1750315), (14, 1500270), (15, 1400252), (20, 1050189), (21, 1000180), (28, 750135), (30, 700126), (35, 600108), (42, 500090), (43, 488460), (60, 350063), (70, 300054), (84, 250045), (86, 244230), (105, 200036), (129, 162820), (140, 150027), (172, 122115), (210, 100018), (215, 97692), (258, 81410), (301, 69780), (420, 50009), (430, 48846), (516, 40705), (602, 34890), (645, 32564), (860, 24423), (903, 23260), (1163, 18060), (1204, 17445), (1290, 16282), (1505, 13956), (1806, 11630), (2326, 9030), (2580, 8141), (3010, 6978), (3489, 6020), (3612, 5815), (4515, 4652)]