161960820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{385621}}^1$

素因数の和:385640

約数の個数: 48

約数和(自身を含む): 518275968

約数和(自身を除く): 356315148

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, 385621, 771242, 1156863, 1542484, 1928105, 2313726, 2699347, 3856210, 4627452, 5398694, 5784315, 7712420, 8098041, 10797388, 11568630, 13496735, 16196082, 23137260, 26993470, 32392164, 40490205, 53986940, 80980410, 161960820]

約数ペア:

[(1, 161960820), (2, 80980410), (3, 53986940), (4, 40490205), (5, 32392164), (6, 26993470), (7, 23137260), (10, 16196082), (12, 13496735), (14, 11568630), (15, 10797388), (20, 8098041), (21, 7712420), (28, 5784315), (30, 5398694), (35, 4627452), (42, 3856210), (60, 2699347), (70, 2313726), (84, 1928105), (105, 1542484), (140, 1156863), (210, 771242), (420, 385621)]