30711980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{6217}}^1$

素因数の和:6258

約数の個数: 48

約数和(自身を含む): 73123680

約数和(自身を除く): 42411700

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940, 6217, 12434, 24868, 31085, 62170, 80821, 118123, 124340, 161642, 236246, 323284, 404105, 472492, 590615, 808210, 1181230, 1535599, 1616420, 2362460, 3071198, 6142396, 7677995, 15355990, 30711980]

約数ペア:

[(1, 30711980), (2, 15355990), (4, 7677995), (5, 6142396), (10, 3071198), (13, 2362460), (19, 1616420), (20, 1535599), (26, 1181230), (38, 808210), (52, 590615), (65, 472492), (76, 404105), (95, 323284), (130, 236246), (190, 161642), (247, 124340), (260, 118123), (380, 80821), (494, 62170), (988, 31085), (1235, 24868), (2470, 12434), (4940, 6217)]