21352380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50839}}^1$

素因数の和:50858

約数の個数: 48

約数和(自身を含む): 68328960

約数和(自身を除く): 46976580

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, 50839, 101678, 152517, 203356, 254195, 305034, 355873, 508390, 610068, 711746, 762585, 1016780, 1067619, 1423492, 1525170, 1779365, 2135238, 3050340, 3558730, 4270476, 5338095, 7117460, 10676190, 21352380]

約数ペア:

[(1, 21352380), (2, 10676190), (3, 7117460), (4, 5338095), (5, 4270476), (6, 3558730), (7, 3050340), (10, 2135238), (12, 1779365), (14, 1525170), (15, 1423492), (20, 1067619), (21, 1016780), (28, 762585), (30, 711746), (35, 610068), (42, 508390), (60, 355873), (70, 305034), (84, 254195), (105, 203356), (140, 152517), (210, 101678), (420, 50839)]