20121609825

素因数分解:

$3^2\times 5^2\times {\mathrm{109}}^1\times {\mathrm{131}}^1\times {\mathrm{6263}}^1$

素因数の和:6519

約数の個数: 72

約数和(自身を含む): 36654171840

約数和(自身を除く): 16532562015

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 109, 131, 225, 327, 393, 545, 655, 981, 1179, 1635, 1965, 2725, 3275, 4905, 5895, 6263, 8175, 9825, 14279, 18789, 24525, 29475, 31315, 42837, 56367, 71395, 93945, 128511, 156575, 214185, 281835, 356975, 469725, 642555, 682667, 820453, 1070925, 1409175, 2048001, 2461359, 3212775, 3413335, 4102265, 6144003, 7384077, 10240005, 12306795, 17066675, 20511325, 30720015, 36920385, 51200025, 61533975, 89429377, 153600075, 184601925, 268288131, 447146885, 804864393, 1341440655, 2235734425, 4024321965, 6707203275, 20121609825]

約数ペア:

[(1, 20121609825), (3, 6707203275), (5, 4024321965), (9, 2235734425), (15, 1341440655), (25, 804864393), (45, 447146885), (75, 268288131), (109, 184601925), (131, 153600075), (225, 89429377), (327, 61533975), (393, 51200025), (545, 36920385), (655, 30720015), (981, 20511325), (1179, 17066675), (1635, 12306795), (1965, 10240005), (2725, 7384077), (3275, 6144003), (4905, 4102265), (5895, 3413335), (6263, 3212775), (8175, 2461359), (9825, 2048001), (14279, 1409175), (18789, 1070925), (24525, 820453), (29475, 682667), (31315, 642555), (42837, 469725), (56367, 356975), (71395, 281835), (93945, 214185), (128511, 156575)]