21813090

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55931}}^1$

素因数の和:55954

約数の個数: 32

約数和(自身を含む): 56379456

約数和(自身を除く): 34566366

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 55931, 111862, 167793, 279655, 335586, 559310, 727103, 838965, 1454206, 1677930, 2181309, 3635515, 4362618, 7271030, 10906545, 21813090]

約数ペア:

[(1, 21813090), (2, 10906545), (3, 7271030), (5, 4362618), (6, 3635515), (10, 2181309), (13, 1677930), (15, 1454206), (26, 838965), (30, 727103), (39, 559310), (65, 335586), (78, 279655), (130, 167793), (195, 111862), (390, 55931)]