281501948

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:188

約数の個数: 144

約数和(自身を含む): 668989440

約数和(自身を除く): 387487492

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 31, 38, 52, 62, 76, 91, 101, 124, 133, 169, 182, 202, 217, 247, 266, 338, 364, 403, 404, 434, 494, 532, 589, 676, 707, 806, 868, 988, 1178, 1183, 1313, 1414, 1612, 1729, 1919, 2356, 2366, 2626, 2821, 2828, 3131, 3211, 3458, 3838, 4123, 4732, 5239, 5252, 5642, 6262, 6422, 6916, 7657, 7676, 8246, 9191, 10478, 11284, 12524, 12844, 13433, 15314, 16492, 17069, 18382, 20956, 21917, 22477, 24947, 26866, 30628, 34138, 36673, 36764, 40703, 43834, 44954, 49894, 53599, 53732, 59489, 68276, 73346, 81406, 87668, 89908, 99541, 99788, 107198, 118978, 119483, 146692, 162812, 174629, 199082, 214396, 237956, 238966, 284921, 324311, 349258, 398164, 416423, 477932, 529139, 569842, 648622, 696787, 698516, 773357, 832846, 1058278, 1139684, 1297244, 1393574, 1546714, 1665692, 2116556, 2270177, 2787148, 3093428, 3703973, 4540354, 5413499, 7407946, 9080708, 10053641, 10826998, 14815892, 20107282, 21653996, 40214564, 70375487, 140750974, 281501948]

約数ペア:

[(1, 281501948), (2, 140750974), (4, 70375487), (7, 40214564), (13, 21653996), (14, 20107282), (19, 14815892), (26, 10826998), (28, 10053641), (31, 9080708), (38, 7407946), (52, 5413499), (62, 4540354), (76, 3703973), (91, 3093428), (101, 2787148), (124, 2270177), (133, 2116556), (169, 1665692), (182, 1546714), (202, 1393574), (217, 1297244), (247, 1139684), (266, 1058278), (338, 832846), (364, 773357), (403, 698516), (404, 696787), (434, 648622), (494, 569842), (532, 529139), (589, 477932), (676, 416423), (707, 398164), (806, 349258), (868, 324311), (988, 284921), (1178, 238966), (1183, 237956), (1313, 214396), (1414, 199082), (1612, 174629), (1729, 162812), (1919, 146692), (2356, 119483), (2366, 118978), (2626, 107198), (2821, 99788), (2828, 99541), (3131, 89908), (3211, 87668), (3458, 81406), (3838, 73346), (4123, 68276), (4732, 59489), (5239, 53732), (5252, 53599), (5642, 49894), (6262, 44954), (6422, 43834), (6916, 40703), (7657, 36764), (7676, 36673), (8246, 34138), (9191, 30628), (10478, 26866), (11284, 24947), (12524, 22477), (12844, 21917), (13433, 20956), (15314, 18382), (16492, 17069)]