21215460

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50513}}^1$

素因数の和:50532

約数の個数: 48

約数和(自身を含む): 67890816

約数和(自身を除く): 46675356

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 50513, 101026, 151539, 202052, 252565, 303078, 353591, 505130, 606156, 707182, 757695, 1010260, 1060773, 1414364, 1515390, 1767955, 2121546, 3030780, 3535910, 4243092, 5303865, 7071820, 10607730, 21215460]

約数ペア:

[(1, 21215460), (2, 10607730), (3, 7071820), (4, 5303865), (5, 4243092), (6, 3535910), (7, 3030780), (10, 2121546), (12, 1767955), (14, 1515390), (15, 1414364), (20, 1060773), (21, 1010260), (28, 757695), (30, 707182), (35, 606156), (42, 505130), (60, 353591), (70, 303078), (84, 252565), (105, 202052), (140, 151539), (210, 101026), (420, 50513)]