21638178

素因数分解:

$2^1\times 3^8\times {\mathrm{17}}^1\times {\mathrm{97}}^1$

素因数の和:140

約数の個数: 72

約数和(自身を含む): 52078572

約数和(自身を除く): 30440394

約数列:

[1, 2, 3, 6, 9, 17, 18, 27, 34, 51, 54, 81, 97, 102, 153, 162, 194, 243, 291, 306, 459, 486, 582, 729, 873, 918, 1377, 1458, 1649, 1746, 2187, 2619, 2754, 3298, 4131, 4374, 4947, 5238, 6561, 7857, 8262, 9894, 12393, 13122, 14841, 15714, 23571, 24786, 29682, 37179, 44523, 47142, 70713, 74358, 89046, 111537, 133569, 141426, 212139, 223074, 267138, 400707, 424278, 636417, 801414, 1202121, 1272834, 2404242, 3606363, 7212726, 10819089, 21638178]

約数ペア:

[(1, 21638178), (2, 10819089), (3, 7212726), (6, 3606363), (9, 2404242), (17, 1272834), (18, 1202121), (27, 801414), (34, 636417), (51, 424278), (54, 400707), (81, 267138), (97, 223074), (102, 212139), (153, 141426), (162, 133569), (194, 111537), (243, 89046), (291, 74358), (306, 70713), (459, 47142), (486, 44523), (582, 37179), (729, 29682), (873, 24786), (918, 23571), (1377, 15714), (1458, 14841), (1649, 13122), (1746, 12393), (2187, 9894), (2619, 8262), (2754, 7857), (3298, 6561), (4131, 5238), (4374, 4947)]