212271780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{505409}}^1$

素因数の和:505428

約数の個数: 48

約数和(自身を含む): 679271040

約数和(自身を除く): 466999260

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, 505409, 1010818, 1516227, 2021636, 2527045, 3032454, 3537863, 5054090, 6064908, 7075726, 7581135, 10108180, 10613589, 14151452, 15162270, 17689315, 21227178, 30324540, 35378630, 42454356, 53067945, 70757260, 106135890, 212271780]

約数ペア:

[(1, 212271780), (2, 106135890), (3, 70757260), (4, 53067945), (5, 42454356), (6, 35378630), (7, 30324540), (10, 21227178), (12, 17689315), (14, 15162270), (15, 14151452), (20, 10613589), (21, 10108180), (28, 7581135), (30, 7075726), (35, 6064908), (42, 5054090), (60, 3537863), (70, 3032454), (84, 2527045), (105, 2021636), (140, 1516227), (210, 1010818), (420, 505409)]