21863940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{52057}}^1$

素因数の和:52076

約数の個数: 48

約数和(自身を含む): 69965952

約数和(自身を除く): 48102012

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, 52057, 104114, 156171, 208228, 260285, 312342, 364399, 520570, 624684, 728798, 780855, 1041140, 1093197, 1457596, 1561710, 1821995, 2186394, 3123420, 3643990, 4372788, 5465985, 7287980, 10931970, 21863940]

約数ペア:

[(1, 21863940), (2, 10931970), (3, 7287980), (4, 5465985), (5, 4372788), (6, 3643990), (7, 3123420), (10, 2186394), (12, 1821995), (14, 1561710), (15, 1457596), (20, 1093197), (21, 1041140), (28, 780855), (30, 728798), (35, 624684), (42, 520570), (60, 364399), (70, 312342), (84, 260285), (105, 208228), (140, 156171), (210, 104114), (420, 52057)]