206579940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{491857}}^1$

素因数の和:491876

約数の個数: 48

約数和(自身を含む): 661057152

約数和(自身を除く): 454477212

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, 491857, 983714, 1475571, 1967428, 2459285, 2951142, 3442999, 4918570, 5902284, 6885998, 7377855, 9837140, 10328997, 13771996, 14755710, 17214995, 20657994, 29511420, 34429990, 41315988, 51644985, 68859980, 103289970, 206579940]

約数ペア:

[(1, 206579940), (2, 103289970), (3, 68859980), (4, 51644985), (5, 41315988), (6, 34429990), (7, 29511420), (10, 20657994), (12, 17214995), (14, 14755710), (15, 13771996), (20, 10328997), (21, 9837140), (28, 7377855), (30, 6885998), (35, 5902284), (42, 4918570), (60, 3442999), (70, 2951142), (84, 2459285), (105, 1967428), (140, 1475571), (210, 983714), (420, 491857)]