28113280

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:172

約数の個数: 128

約数和(自身を含む): 75398400

約数和(自身を除く): 47285120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 109, 124, 128, 130, 155, 160, 208, 218, 248, 260, 310, 320, 403, 416, 436, 496, 520, 545, 620, 640, 806, 832, 872, 992, 1040, 1090, 1240, 1417, 1612, 1664, 1744, 1984, 2015, 2080, 2180, 2480, 2834, 3224, 3379, 3488, 3968, 4030, 4160, 4360, 4960, 5668, 6448, 6758, 6976, 7085, 8060, 8320, 8720, 9920, 11336, 12896, 13516, 13952, 14170, 16120, 16895, 17440, 19840, 22672, 25792, 27032, 28340, 32240, 33790, 34880, 43927, 45344, 51584, 54064, 56680, 64480, 67580, 69760, 87854, 90688, 108128, 113360, 128960, 135160, 175708, 181376, 216256, 219635, 226720, 257920, 270320, 351416, 432512, 439270, 453440, 540640, 702832, 878540, 906880, 1081280, 1405664, 1757080, 2162560, 2811328, 3514160, 5622656, 7028320, 14056640, 28113280]

約数ペア:

[(1, 28113280), (2, 14056640), (4, 7028320), (5, 5622656), (8, 3514160), (10, 2811328), (13, 2162560), (16, 1757080), (20, 1405664), (26, 1081280), (31, 906880), (32, 878540), (40, 702832), (52, 540640), (62, 453440), (64, 439270), (65, 432512), (80, 351416), (104, 270320), (109, 257920), (124, 226720), (128, 219635), (130, 216256), (155, 181376), (160, 175708), (208, 135160), (218, 128960), (248, 113360), (260, 108128), (310, 90688), (320, 87854), (403, 69760), (416, 67580), (436, 64480), (496, 56680), (520, 54064), (545, 51584), (620, 45344), (640, 43927), (806, 34880), (832, 33790), (872, 32240), (992, 28340), (1040, 27032), (1090, 25792), (1240, 22672), (1417, 19840), (1612, 17440), (1664, 16895), (1744, 16120), (1984, 14170), (2015, 13952), (2080, 13516), (2180, 12896), (2480, 11336), (2834, 9920), (3224, 8720), (3379, 8320), (3488, 8060), (3968, 7085), (4030, 6976), (4160, 6758), (4360, 6448), (4960, 5668)]