1999125117

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{461}}^1$

素因数の和:672

約数の個数: 80

約数和(自身を含む): 3391686144

約数和(自身を除く): 1392561027

約数列:

[1, 3, 9, 11, 27, 31, 33, 81, 93, 99, 157, 279, 297, 341, 461, 471, 837, 891, 1023, 1383, 1413, 1727, 2511, 3069, 4149, 4239, 4867, 5071, 5181, 9207, 12447, 12717, 14291, 14601, 15213, 15543, 27621, 37341, 42873, 43803, 45639, 46629, 53537, 72377, 128619, 131409, 136917, 139887, 157201, 160611, 217131, 385857, 394227, 410751, 471603, 481833, 651393, 796147, 1157571, 1414809, 1445499, 1954179, 2243687, 2388441, 4244427, 4336497, 5862537, 6731061, 7165323, 12733281, 20193183, 21495969, 24680557, 60579549, 64487907, 74041671, 181738647, 222125013, 666375039, 1999125117]

約数ペア:

[(1, 1999125117), (3, 666375039), (9, 222125013), (11, 181738647), (27, 74041671), (31, 64487907), (33, 60579549), (81, 24680557), (93, 21495969), (99, 20193183), (157, 12733281), (279, 7165323), (297, 6731061), (341, 5862537), (461, 4336497), (471, 4244427), (837, 2388441), (891, 2243687), (1023, 1954179), (1383, 1445499), (1413, 1414809), (1727, 1157571), (2511, 796147), (3069, 651393), (4149, 481833), (4239, 471603), (4867, 410751), (5071, 394227), (5181, 385857), (9207, 217131), (12447, 160611), (12717, 157201), (14291, 139887), (14601, 136917), (15213, 131409), (15543, 128619), (27621, 72377), (37341, 53537), (42873, 46629), (43803, 45639)]