21971460

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{52313}}^1$

素因数の和:52332

約数の個数: 48

約数和(自身を含む): 70310016

約数和(自身を除く): 48338556

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, 52313, 104626, 156939, 209252, 261565, 313878, 366191, 523130, 627756, 732382, 784695, 1046260, 1098573, 1464764, 1569390, 1830955, 2197146, 3138780, 3661910, 4394292, 5492865, 7323820, 10985730, 21971460]

約数ペア:

[(1, 21971460), (2, 10985730), (3, 7323820), (4, 5492865), (5, 4394292), (6, 3661910), (7, 3138780), (10, 2197146), (12, 1830955), (14, 1569390), (15, 1464764), (20, 1098573), (21, 1046260), (28, 784695), (30, 732382), (35, 627756), (42, 523130), (60, 366191), (70, 313878), (84, 261565), (105, 209252), (140, 156939), (210, 104626), (420, 52313)]