21000751870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{15790039}}^1$

素因数の和:15790072

約数の個数: 32

約数和(自身を含む): 45475315200

約数和(自身を除く): 24474563330

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 95, 133, 190, 266, 665, 1330, 15790039, 31580078, 78950195, 110530273, 157900390, 221060546, 300010741, 552651365, 600021482, 1105302730, 1500053705, 2100075187, 3000107410, 4200150374, 10500375935, 21000751870]

約数ペア:

[(1, 21000751870), (2, 10500375935), (5, 4200150374), (7, 3000107410), (10, 2100075187), (14, 1500053705), (19, 1105302730), (35, 600021482), (38, 552651365), (70, 300010741), (95, 221060546), (133, 157900390), (190, 110530273), (266, 78950195), (665, 31580078), (1330, 15790039)]