201799998

素因数分解:

$2^1\times 3^4\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{257}}^1$

素因数の和:439

約数の個数: 80

約数和(自身を含む): 469768464

約数和(自身を除く): 267968466

約数列:

[1, 2, 3, 6, 9, 18, 27, 37, 54, 74, 81, 111, 131, 162, 222, 257, 262, 333, 393, 514, 666, 771, 786, 999, 1179, 1542, 1998, 2313, 2358, 2997, 3537, 4626, 4847, 5994, 6939, 7074, 9509, 9694, 10611, 13878, 14541, 19018, 20817, 21222, 28527, 29082, 33667, 41634, 43623, 57054, 67334, 85581, 87246, 101001, 130869, 171162, 202002, 256743, 261738, 303003, 392607, 513486, 606006, 770229, 785214, 909009, 1245679, 1540458, 1818018, 2491358, 2727027, 3737037, 5454054, 7474074, 11211111, 22422222, 33633333, 67266666, 100899999, 201799998]

約数ペア:

[(1, 201799998), (2, 100899999), (3, 67266666), (6, 33633333), (9, 22422222), (18, 11211111), (27, 7474074), (37, 5454054), (54, 3737037), (74, 2727027), (81, 2491358), (111, 1818018), (131, 1540458), (162, 1245679), (222, 909009), (257, 785214), (262, 770229), (333, 606006), (393, 513486), (514, 392607), (666, 303003), (771, 261738), (786, 256743), (999, 202002), (1179, 171162), (1542, 130869), (1998, 101001), (2313, 87246), (2358, 85581), (2997, 67334), (3537, 57054), (4626, 43623), (4847, 41634), (5994, 33667), (6939, 29082), (7074, 28527), (9509, 21222), (9694, 20817), (10611, 19018), (13878, 14541)]