21129180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{251}}^1$

素因数の和:347

約数の個数: 96

約数和(自身を含む): 62995968

約数和(自身を除く): 41866788

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 61, 69, 92, 115, 122, 138, 183, 230, 244, 251, 276, 305, 345, 366, 460, 502, 610, 690, 732, 753, 915, 1004, 1220, 1255, 1380, 1403, 1506, 1830, 2510, 2806, 3012, 3660, 3765, 4209, 5020, 5612, 5773, 7015, 7530, 8418, 11546, 14030, 15060, 15311, 16836, 17319, 21045, 23092, 28060, 28865, 30622, 34638, 42090, 45933, 57730, 61244, 69276, 76555, 84180, 86595, 91866, 115460, 153110, 173190, 183732, 229665, 306220, 346380, 352153, 459330, 704306, 918660, 1056459, 1408612, 1760765, 2112918, 3521530, 4225836, 5282295, 7043060, 10564590, 21129180]

約数ペア:

[(1, 21129180), (2, 10564590), (3, 7043060), (4, 5282295), (5, 4225836), (6, 3521530), (10, 2112918), (12, 1760765), (15, 1408612), (20, 1056459), (23, 918660), (30, 704306), (46, 459330), (60, 352153), (61, 346380), (69, 306220), (92, 229665), (115, 183732), (122, 173190), (138, 153110), (183, 115460), (230, 91866), (244, 86595), (251, 84180), (276, 76555), (305, 69276), (345, 61244), (366, 57730), (460, 45933), (502, 42090), (610, 34638), (690, 30622), (732, 28865), (753, 28060), (915, 23092), (1004, 21045), (1220, 17319), (1255, 16836), (1380, 15311), (1403, 15060), (1506, 14030), (1830, 11546), (2510, 8418), (2806, 7530), (3012, 7015), (3660, 5773), (3765, 5612), (4209, 5020)]