21404595

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{157}}^1$

素因数の和:375

約数の個数: 32

約数和(自身を含む): 35265600

約数和(自身を除く): 13861005

約数列:

[1, 3, 5, 15, 61, 149, 157, 183, 305, 447, 471, 745, 785, 915, 2235, 2355, 9089, 9577, 23393, 27267, 28731, 45445, 47885, 70179, 116965, 136335, 143655, 350895, 1426973, 4280919, 7134865, 21404595]

約数ペア:

[(1, 21404595), (3, 7134865), (5, 4280919), (15, 1426973), (61, 350895), (149, 143655), (157, 136335), (183, 116965), (305, 70179), (447, 47885), (471, 45445), (745, 28731), (785, 27267), (915, 23393), (2235, 9577), (2355, 9089)]