21708090

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{10487}}^1$

素因数の和:10523

約数の個数: 48

約数和(自身を含む): 58900608

約数和(自身を除く): 37192518

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 23, 30, 45, 46, 69, 90, 115, 138, 207, 230, 345, 414, 690, 1035, 2070, 10487, 20974, 31461, 52435, 62922, 94383, 104870, 157305, 188766, 241201, 314610, 471915, 482402, 723603, 943830, 1206005, 1447206, 2170809, 2412010, 3618015, 4341618, 7236030, 10854045, 21708090]

約数ペア:

[(1, 21708090), (2, 10854045), (3, 7236030), (5, 4341618), (6, 3618015), (9, 2412010), (10, 2170809), (15, 1447206), (18, 1206005), (23, 943830), (30, 723603), (45, 482402), (46, 471915), (69, 314610), (90, 241201), (115, 188766), (138, 157305), (207, 104870), (230, 94383), (345, 62922), (414, 52435), (690, 31461), (1035, 20974), (2070, 10487)]