21727880

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{277}}^1$

素因数の和:378

約数の個数: 64

約数和(自身を含む): 51341040

約数和(自身を除く): 29613160

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 53, 74, 106, 148, 185, 212, 265, 277, 296, 370, 424, 530, 554, 740, 1060, 1108, 1385, 1480, 1961, 2120, 2216, 2770, 3922, 5540, 7844, 9805, 10249, 11080, 14681, 15688, 19610, 20498, 29362, 39220, 40996, 51245, 58724, 73405, 78440, 81992, 102490, 117448, 146810, 204980, 293620, 409960, 543197, 587240, 1086394, 2172788, 2715985, 4345576, 5431970, 10863940, 21727880]

約数ペア:

[(1, 21727880), (2, 10863940), (4, 5431970), (5, 4345576), (8, 2715985), (10, 2172788), (20, 1086394), (37, 587240), (40, 543197), (53, 409960), (74, 293620), (106, 204980), (148, 146810), (185, 117448), (212, 102490), (265, 81992), (277, 78440), (296, 73405), (370, 58724), (424, 51245), (530, 40996), (554, 39220), (740, 29362), (1060, 20498), (1108, 19610), (1385, 15688), (1480, 14681), (1961, 11080), (2120, 10249), (2216, 9805), (2770, 7844), (3922, 5540)]