21507330

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55147}}^1$

素因数の和:55170

約数の個数: 32

約数和(自身を含む): 55589184

約数和(自身を除く): 34081854

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 55147, 110294, 165441, 275735, 330882, 551470, 716911, 827205, 1433822, 1654410, 2150733, 3584555, 4301466, 7169110, 10753665, 21507330]

約数ペア:

[(1, 21507330), (2, 10753665), (3, 7169110), (5, 4301466), (6, 3584555), (10, 2150733), (13, 1654410), (15, 1433822), (26, 827205), (30, 716911), (39, 551470), (65, 330882), (78, 275735), (130, 165441), (195, 110294), (390, 55147)]