19924940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4591}}^1$

素因数の和:4638

約数の個数: 48

約数和(自身を含む): 49373184

約数和(自身を除く): 29448244

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 4591, 9182, 18364, 22955, 32137, 45910, 64274, 91820, 128548, 142321, 160685, 284642, 321370, 569284, 642740, 711605, 996247, 1423210, 1992494, 2846420, 3984988, 4981235, 9962470, 19924940]

約数ペア:

[(1, 19924940), (2, 9962470), (4, 4981235), (5, 3984988), (7, 2846420), (10, 1992494), (14, 1423210), (20, 996247), (28, 711605), (31, 642740), (35, 569284), (62, 321370), (70, 284642), (124, 160685), (140, 142321), (155, 128548), (217, 91820), (310, 64274), (434, 45910), (620, 32137), (868, 22955), (1085, 18364), (2170, 9182), (4340, 4591)]