28124440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{613}}^1$

素因数の和:692

約数の個数: 64

約数和(自身を含む): 67196160

約数和(自身を除く): 39071720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 37, 40, 62, 74, 124, 148, 155, 185, 248, 296, 310, 370, 613, 620, 740, 1147, 1226, 1240, 1480, 2294, 2452, 3065, 4588, 4904, 5735, 6130, 9176, 11470, 12260, 19003, 22681, 22940, 24520, 38006, 45362, 45880, 76012, 90724, 95015, 113405, 152024, 181448, 190030, 226810, 380060, 453620, 703111, 760120, 907240, 1406222, 2812444, 3515555, 5624888, 7031110, 14062220, 28124440]

約数ペア:

[(1, 28124440), (2, 14062220), (4, 7031110), (5, 5624888), (8, 3515555), (10, 2812444), (20, 1406222), (31, 907240), (37, 760120), (40, 703111), (62, 453620), (74, 380060), (124, 226810), (148, 190030), (155, 181448), (185, 152024), (248, 113405), (296, 95015), (310, 90724), (370, 76012), (613, 45880), (620, 45362), (740, 38006), (1147, 24520), (1226, 22940), (1240, 22681), (1480, 19003), (2294, 12260), (2452, 11470), (3065, 9176), (4588, 6130), (4904, 5735)]