287960820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{685621}}^1$

素因数の和:685640

約数の個数: 48

約数和(自身を含む): 921475968

約数和(自身を除く): 633515148

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, 685621, 1371242, 2056863, 2742484, 3428105, 4113726, 4799347, 6856210, 8227452, 9598694, 10284315, 13712420, 14398041, 19197388, 20568630, 23996735, 28796082, 41137260, 47993470, 57592164, 71990205, 95986940, 143980410, 287960820]

約数ペア:

[(1, 287960820), (2, 143980410), (3, 95986940), (4, 71990205), (5, 57592164), (6, 47993470), (7, 41137260), (10, 28796082), (12, 23996735), (14, 20568630), (15, 19197388), (20, 14398041), (21, 13712420), (28, 10284315), (30, 9598694), (35, 8227452), (42, 6856210), (60, 4799347), (70, 4113726), (84, 3428105), (105, 2742484), (140, 2056863), (210, 1371242), (420, 685621)]