21484680

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{25577}}^1$

素因数の和:25598

約数の個数: 64

約数和(自身を含む): 73664640

約数和(自身を除く): 52179960

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 25577, 51154, 76731, 102308, 127885, 153462, 179039, 204616, 255770, 306924, 358078, 383655, 511540, 537117, 613848, 716156, 767310, 895195, 1023080, 1074234, 1432312, 1534620, 1790390, 2148468, 2685585, 3069240, 3580780, 4296936, 5371170, 7161560, 10742340, 21484680]

約数ペア:

[(1, 21484680), (2, 10742340), (3, 7161560), (4, 5371170), (5, 4296936), (6, 3580780), (7, 3069240), (8, 2685585), (10, 2148468), (12, 1790390), (14, 1534620), (15, 1432312), (20, 1074234), (21, 1023080), (24, 895195), (28, 767310), (30, 716156), (35, 613848), (40, 537117), (42, 511540), (56, 383655), (60, 358078), (70, 306924), (84, 255770), (105, 204616), (120, 179039), (140, 153462), (168, 127885), (210, 102308), (280, 76731), (420, 51154), (840, 25577)]