21000918148

素因数分解:

$2^2\times 7^1\times {\mathrm{199}}^1\times {\mathrm{311}}^1\times {\mathrm{12119}}^1$

素因数の和:12640

約数の個数: 48

約数和(自身を含む): 42352128000

約数和(自身を除く): 21351209852

約数列:

[1, 2, 4, 7, 14, 28, 199, 311, 398, 622, 796, 1244, 1393, 2177, 2786, 4354, 5572, 8708, 12119, 24238, 48476, 61889, 84833, 123778, 169666, 247556, 339332, 433223, 866446, 1732892, 2411681, 3769009, 4823362, 7538018, 9646724, 15076036, 16881767, 26383063, 33763534, 52766126, 67527068, 105532252, 750032791, 1500065582, 3000131164, 5250229537, 10500459074, 21000918148]

約数ペア:

[(1, 21000918148), (2, 10500459074), (4, 5250229537), (7, 3000131164), (14, 1500065582), (28, 750032791), (199, 105532252), (311, 67527068), (398, 52766126), (622, 33763534), (796, 26383063), (1244, 16881767), (1393, 15076036), (2177, 9646724), (2786, 7538018), (4354, 4823362), (5572, 3769009), (8708, 2411681), (12119, 1732892), (24238, 866446), (48476, 433223), (61889, 339332), (84833, 247556), (123778, 169666)]