18780451749

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1\times {\mathrm{733}}^1$

素因数の和:968

約数の個数: 80

約数和(自身を含む): 29483405952

約数和(自身を除く): 10702954203

約数列:

[1, 3, 9, 27, 37, 81, 83, 103, 111, 249, 309, 333, 733, 747, 927, 999, 2199, 2241, 2781, 2997, 3071, 3811, 6597, 6723, 8343, 8549, 9213, 11433, 19791, 25647, 27121, 27639, 34299, 59373, 60839, 75499, 76941, 81363, 82917, 102897, 182517, 226497, 230823, 244089, 248751, 308691, 316313, 547551, 679491, 692469, 732267, 948939, 1642653, 2038473, 2196801, 2251043, 2793463, 2846817, 4927959, 6115419, 6266417, 6753129, 8380389, 8540451, 18799251, 20259387, 25141167, 25621353, 56397753, 60778161, 75423501, 169193259, 182334483, 226270503, 231857429, 507579777, 695572287, 2086716861, 6260150583, 18780451749]

約数ペア:

[(1, 18780451749), (3, 6260150583), (9, 2086716861), (27, 695572287), (37, 507579777), (81, 231857429), (83, 226270503), (103, 182334483), (111, 169193259), (249, 75423501), (309, 60778161), (333, 56397753), (733, 25621353), (747, 25141167), (927, 20259387), (999, 18799251), (2199, 8540451), (2241, 8380389), (2781, 6753129), (2997, 6266417), (3071, 6115419), (3811, 4927959), (6597, 2846817), (6723, 2793463), (8343, 2251043), (8549, 2196801), (9213, 2038473), (11433, 1642653), (19791, 948939), (25647, 732267), (27121, 692469), (27639, 679491), (34299, 547551), (59373, 316313), (60839, 308691), (75499, 248751), (76941, 244089), (81363, 230823), (82917, 226497), (102897, 182517)]