19689885

素因数分解:

$3^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{797}}^1$

素因数の和:875

約数の個数: 40

約数和(自身を含む): 35919576

約数和(自身を除く): 16229691

約数列:

[1, 3, 5, 9, 15, 27, 45, 61, 81, 135, 183, 305, 405, 549, 797, 915, 1647, 2391, 2745, 3985, 4941, 7173, 8235, 11955, 21519, 24705, 35865, 48617, 64557, 107595, 145851, 243085, 322785, 437553, 729255, 1312659, 2187765, 3937977, 6563295, 19689885]

約数ペア:

[(1, 19689885), (3, 6563295), (5, 3937977), (9, 2187765), (15, 1312659), (27, 729255), (45, 437553), (61, 322785), (81, 243085), (135, 145851), (183, 107595), (305, 64557), (405, 48617), (549, 35865), (797, 24705), (915, 21519), (1647, 11955), (2391, 8235), (2745, 7173), (3985, 4941)]