20216643685

素因数分解:

$5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{223}}^1\times {\mathrm{7873}}^1$

素因数の和:8162

約数の個数: 48

約数和(自身を含む): 28954146816

約数和(自身を除く): 8737503131

約数列:

[1, 5, 7, 35, 47, 49, 223, 235, 245, 329, 1115, 1561, 1645, 2303, 7805, 7873, 10481, 10927, 11515, 39365, 52405, 54635, 55111, 73367, 275555, 366835, 370031, 385777, 513569, 1755679, 1850155, 1928885, 2567845, 2590217, 8778395, 12289753, 12951085, 18131519, 61448765, 82516913, 86028271, 90657595, 412584565, 430141355, 577618391, 2888091955, 4043328737, 20216643685]

約数ペア:

[(1, 20216643685), (5, 4043328737), (7, 2888091955), (35, 577618391), (47, 430141355), (49, 412584565), (223, 90657595), (235, 86028271), (245, 82516913), (329, 61448765), (1115, 18131519), (1561, 12951085), (1645, 12289753), (2303, 8778395), (7805, 2590217), (7873, 2567845), (10481, 1928885), (10927, 1850155), (11515, 1755679), (39365, 513569), (52405, 385777), (54635, 370031), (55111, 366835), (73367, 275555)]