19780128

素因数分解:

$2^5\times 3^2\times {\mathrm{173}}^1\times {\mathrm{397}}^1$

素因数の和:586

約数の個数: 72

約数和(自身を含む): 56717388

約数和(自身を除く): 36937260

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 173, 288, 346, 397, 519, 692, 794, 1038, 1191, 1384, 1557, 1588, 2076, 2382, 2768, 3114, 3176, 3573, 4152, 4764, 5536, 6228, 6352, 7146, 8304, 9528, 12456, 12704, 14292, 16608, 19056, 24912, 28584, 38112, 49824, 57168, 68681, 114336, 137362, 206043, 274724, 412086, 549448, 618129, 824172, 1098896, 1236258, 1648344, 2197792, 2472516, 3296688, 4945032, 6593376, 9890064, 19780128]

約数ペア:

[(1, 19780128), (2, 9890064), (3, 6593376), (4, 4945032), (6, 3296688), (8, 2472516), (9, 2197792), (12, 1648344), (16, 1236258), (18, 1098896), (24, 824172), (32, 618129), (36, 549448), (48, 412086), (72, 274724), (96, 206043), (144, 137362), (173, 114336), (288, 68681), (346, 57168), (397, 49824), (519, 38112), (692, 28584), (794, 24912), (1038, 19056), (1191, 16608), (1384, 14292), (1557, 12704), (1588, 12456), (2076, 9528), (2382, 8304), (2768, 7146), (3114, 6352), (3176, 6228), (3573, 5536), (4152, 4764)]