2198347775

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{241}}^1$

素因数の和:421

約数の個数: 72

約数和(自身を含む): 3163083264

約数和(自身を除く): 964735489

約数列:

[1, 5, 13, 17, 25, 65, 85, 127, 169, 221, 241, 325, 425, 635, 845, 1105, 1205, 1651, 2159, 2873, 3133, 3175, 4097, 4225, 5525, 6025, 8255, 10795, 14365, 15665, 20485, 21463, 28067, 30607, 40729, 41275, 53261, 53975, 71825, 78325, 102425, 107315, 140335, 153035, 203645, 266305, 364871, 397891, 520319, 536575, 692393, 701675, 765175, 1018225, 1331525, 1824355, 1989455, 2601595, 3461965, 5172583, 6764147, 9121775, 9947275, 13007975, 17309825, 25862915, 33820735, 87933911, 129314575, 169103675, 439669555, 2198347775]

約数ペア:

[(1, 2198347775), (5, 439669555), (13, 169103675), (17, 129314575), (25, 87933911), (65, 33820735), (85, 25862915), (127, 17309825), (169, 13007975), (221, 9947275), (241, 9121775), (325, 6764147), (425, 5172583), (635, 3461965), (845, 2601595), (1105, 1989455), (1205, 1824355), (1651, 1331525), (2159, 1018225), (2873, 765175), (3133, 701675), (3175, 692393), (4097, 536575), (4225, 520319), (5525, 397891), (6025, 364871), (8255, 266305), (10795, 203645), (14365, 153035), (15665, 140335), (20485, 107315), (21463, 102425), (28067, 78325), (30607, 71825), (40729, 53975), (41275, 53261)]