21880425

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{587}}^1$

素因数の和:678

約数の個数: 48

約数和(自身を含む): 41997312

約数和(自身を除く): 20116887

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 71, 75, 105, 175, 213, 355, 497, 525, 587, 1065, 1491, 1761, 1775, 2485, 2935, 4109, 5325, 7455, 8805, 12327, 12425, 14675, 20545, 37275, 41677, 44025, 61635, 102725, 125031, 208385, 291739, 308175, 625155, 875217, 1041925, 1458695, 3125775, 4376085, 7293475, 21880425]

約数ペア:

[(1, 21880425), (3, 7293475), (5, 4376085), (7, 3125775), (15, 1458695), (21, 1041925), (25, 875217), (35, 625155), (71, 308175), (75, 291739), (105, 208385), (175, 125031), (213, 102725), (355, 61635), (497, 44025), (525, 41677), (587, 37275), (1065, 20545), (1491, 14675), (1761, 12425), (1775, 12327), (2485, 8805), (2935, 7455), (4109, 5325)]