21600621

素因数分解:

$3^3\times 7^2\times {\mathrm{29}}^1\times {\mathrm{563}}^1$

素因数の和:615

約数の個数: 48

約数和(自身を含む): 38577600

約数和(自身を除く): 16976979

約数列:

[1, 3, 7, 9, 21, 27, 29, 49, 63, 87, 147, 189, 203, 261, 441, 563, 609, 783, 1323, 1421, 1689, 1827, 3941, 4263, 5067, 5481, 11823, 12789, 15201, 16327, 27587, 35469, 38367, 48981, 82761, 106407, 114289, 146943, 248283, 342867, 440829, 744849, 800023, 1028601, 2400069, 3085803, 7200207, 21600621]

約数ペア:

[(1, 21600621), (3, 7200207), (7, 3085803), (9, 2400069), (21, 1028601), (27, 800023), (29, 744849), (49, 440829), (63, 342867), (87, 248283), (147, 146943), (189, 114289), (203, 106407), (261, 82761), (441, 48981), (563, 38367), (609, 35469), (783, 27587), (1323, 16327), (1421, 15201), (1689, 12789), (1827, 11823), (3941, 5481), (4263, 5067)]