28721772

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{661}}^1$

素因数の和:759

約数の個数: 72

約数和(自身を含む): 78073632

約数和(自身を除く): 49351860

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 68, 71, 102, 142, 153, 204, 213, 284, 306, 426, 612, 639, 661, 852, 1207, 1278, 1322, 1983, 2414, 2556, 2644, 3621, 3966, 4828, 5949, 7242, 7932, 10863, 11237, 11898, 14484, 21726, 22474, 23796, 33711, 43452, 44948, 46931, 67422, 93862, 101133, 134844, 140793, 187724, 202266, 281586, 404532, 422379, 563172, 797827, 844758, 1595654, 1689516, 2393481, 3191308, 4786962, 7180443, 9573924, 14360886, 28721772]

約数ペア:

[(1, 28721772), (2, 14360886), (3, 9573924), (4, 7180443), (6, 4786962), (9, 3191308), (12, 2393481), (17, 1689516), (18, 1595654), (34, 844758), (36, 797827), (51, 563172), (68, 422379), (71, 404532), (102, 281586), (142, 202266), (153, 187724), (204, 140793), (213, 134844), (284, 101133), (306, 93862), (426, 67422), (612, 46931), (639, 44948), (661, 43452), (852, 33711), (1207, 23796), (1278, 22474), (1322, 21726), (1983, 14484), (2414, 11898), (2556, 11237), (2644, 10863), (3621, 7932), (3966, 7242), (4828, 5949)]