18693990

素因数分解:

$2^1\times 3^5\times 5^1\times 7^2\times {\mathrm{157}}^1$

素因数の和:193

約数の個数: 144

約数和(自身を含む): 59007312

約数和(自身を除く): 40313322

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 49, 54, 63, 70, 81, 90, 98, 105, 126, 135, 147, 157, 162, 189, 210, 243, 245, 270, 294, 314, 315, 378, 405, 441, 471, 486, 490, 567, 630, 735, 785, 810, 882, 942, 945, 1099, 1134, 1215, 1323, 1413, 1470, 1570, 1701, 1890, 2198, 2205, 2355, 2430, 2646, 2826, 2835, 3297, 3402, 3969, 4239, 4410, 4710, 5495, 5670, 6594, 6615, 7065, 7693, 7938, 8478, 8505, 9891, 10990, 11907, 12717, 13230, 14130, 15386, 16485, 17010, 19782, 19845, 21195, 23079, 23814, 25434, 29673, 32970, 38151, 38465, 39690, 42390, 46158, 49455, 59346, 59535, 63585, 69237, 76302, 76930, 89019, 98910, 115395, 119070, 127170, 138474, 148365, 178038, 190755, 207711, 230790, 267057, 296730, 346185, 381510, 415422, 445095, 534114, 623133, 692370, 890190, 1038555, 1246266, 1335285, 1869399, 2077110, 2670570, 3115665, 3738798, 6231330, 9346995, 18693990]

約数ペア:

[(1, 18693990), (2, 9346995), (3, 6231330), (5, 3738798), (6, 3115665), (7, 2670570), (9, 2077110), (10, 1869399), (14, 1335285), (15, 1246266), (18, 1038555), (21, 890190), (27, 692370), (30, 623133), (35, 534114), (42, 445095), (45, 415422), (49, 381510), (54, 346185), (63, 296730), (70, 267057), (81, 230790), (90, 207711), (98, 190755), (105, 178038), (126, 148365), (135, 138474), (147, 127170), (157, 119070), (162, 115395), (189, 98910), (210, 89019), (243, 76930), (245, 76302), (270, 69237), (294, 63585), (314, 59535), (315, 59346), (378, 49455), (405, 46158), (441, 42390), (471, 39690), (486, 38465), (490, 38151), (567, 32970), (630, 29673), (735, 25434), (785, 23814), (810, 23079), (882, 21195), (942, 19845), (945, 19782), (1099, 17010), (1134, 16485), (1215, 15386), (1323, 14130), (1413, 13230), (1470, 12717), (1570, 11907), (1701, 10990), (1890, 9891), (2198, 8505), (2205, 8478), (2355, 7938), (2430, 7693), (2646, 7065), (2826, 6615), (2835, 6594), (3297, 5670), (3402, 5495), (3969, 4710), (4239, 4410)]