21930909

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1$

素因数の和:210

約数の個数: 64

約数和(自身を含む): 40212480

約数和(自身を除く): 18281571

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 67, 77, 91, 109, 143, 201, 231, 273, 327, 429, 469, 737, 763, 871, 1001, 1199, 1407, 1417, 2211, 2289, 2613, 3003, 3597, 4251, 5159, 6097, 7303, 8393, 9581, 9919, 15477, 15587, 18291, 21909, 25179, 28743, 29757, 46761, 51121, 67067, 80333, 94939, 109109, 153363, 201201, 240999, 284817, 327327, 562331, 664573, 1044329, 1686993, 1993719, 3132987, 7310303, 21930909]

約数ペア:

[(1, 21930909), (3, 7310303), (7, 3132987), (11, 1993719), (13, 1686993), (21, 1044329), (33, 664573), (39, 562331), (67, 327327), (77, 284817), (91, 240999), (109, 201201), (143, 153363), (201, 109109), (231, 94939), (273, 80333), (327, 67067), (429, 51121), (469, 46761), (737, 29757), (763, 28743), (871, 25179), (1001, 21909), (1199, 18291), (1407, 15587), (1417, 15477), (2211, 9919), (2289, 9581), (2613, 8393), (3003, 7303), (3597, 6097), (4251, 5159)]