18891396

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{389}}^1$

素因数の和:489

約数の個数: 72

約数和(自身を含む): 51105600

約数和(自身を除く): 32214204

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 71, 76, 114, 142, 171, 213, 228, 284, 342, 389, 426, 639, 684, 778, 852, 1167, 1278, 1349, 1556, 2334, 2556, 2698, 3501, 4047, 4668, 5396, 7002, 7391, 8094, 12141, 14004, 14782, 16188, 22173, 24282, 27619, 29564, 44346, 48564, 55238, 66519, 82857, 88692, 110476, 133038, 165714, 248571, 266076, 331428, 497142, 524761, 994284, 1049522, 1574283, 2099044, 3148566, 4722849, 6297132, 9445698, 18891396]

約数ペア:

[(1, 18891396), (2, 9445698), (3, 6297132), (4, 4722849), (6, 3148566), (9, 2099044), (12, 1574283), (18, 1049522), (19, 994284), (36, 524761), (38, 497142), (57, 331428), (71, 266076), (76, 248571), (114, 165714), (142, 133038), (171, 110476), (213, 88692), (228, 82857), (284, 66519), (342, 55238), (389, 48564), (426, 44346), (639, 29564), (684, 27619), (778, 24282), (852, 22173), (1167, 16188), (1278, 14782), (1349, 14004), (1556, 12141), (2334, 8094), (2556, 7391), (2698, 7002), (3501, 5396), (4047, 4668)]