256220770

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{607}}^1$

素因数の和:835

約数の個数: 64

約数和(自身を含む): 529514496

約数和(自身を除く): 273293726

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 191, 221, 382, 442, 607, 955, 1105, 1214, 1910, 2210, 2483, 3035, 3247, 4966, 6070, 6494, 7891, 10319, 12415, 15782, 16235, 20638, 24830, 32470, 39455, 42211, 51595, 78910, 84422, 103190, 115937, 134147, 211055, 231874, 268294, 422110, 579685, 670735, 1159370, 1341470, 1507181, 1970929, 3014362, 3941858, 7535905, 9854645, 15071810, 19709290, 25622077, 51244154, 128110385, 256220770]

約数ペア:

[(1, 256220770), (2, 128110385), (5, 51244154), (10, 25622077), (13, 19709290), (17, 15071810), (26, 9854645), (34, 7535905), (65, 3941858), (85, 3014362), (130, 1970929), (170, 1507181), (191, 1341470), (221, 1159370), (382, 670735), (442, 579685), (607, 422110), (955, 268294), (1105, 231874), (1214, 211055), (1910, 134147), (2210, 115937), (2483, 103190), (3035, 84422), (3247, 78910), (4966, 51595), (6070, 42211), (6494, 39455), (7891, 32470), (10319, 24830), (12415, 20638), (15782, 16235)]