21428492787

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{16963}}^1$

素因数の和:17105

約数の個数: 64

約数和(自身を含む): 35339404800

約数和(自身を除く): 13910912013

約数列:

[1, 3, 9, 13, 27, 39, 59, 61, 117, 177, 183, 351, 531, 549, 767, 793, 1593, 1647, 2301, 2379, 3599, 6903, 7137, 10797, 16963, 20709, 21411, 32391, 46787, 50889, 97173, 140361, 152667, 220519, 421083, 458001, 661557, 1000817, 1034743, 1263249, 1984671, 3002451, 3104229, 5954013, 9007353, 9312687, 13010621, 13451659, 27022059, 27938061, 39031863, 40354977, 61049837, 117095589, 121064931, 183149511, 351286767, 363194793, 549448533, 793647881, 1648345599, 2380943643, 7142830929, 21428492787]

約数ペア:

[(1, 21428492787), (3, 7142830929), (9, 2380943643), (13, 1648345599), (27, 793647881), (39, 549448533), (59, 363194793), (61, 351286767), (117, 183149511), (177, 121064931), (183, 117095589), (351, 61049837), (531, 40354977), (549, 39031863), (767, 27938061), (793, 27022059), (1593, 13451659), (1647, 13010621), (2301, 9312687), (2379, 9007353), (3599, 5954013), (6903, 3104229), (7137, 3002451), (10797, 1984671), (16963, 1263249), (20709, 1034743), (21411, 1000817), (32391, 661557), (46787, 458001), (50889, 421083), (97173, 220519), (140361, 152667)]