21000657636

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1366163}}^1$

素因数の和:1366241

約数の個数: 72

約数和(自身を含む): 61663178304

約数和(自身を除く): 40662520668

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 61, 63, 84, 122, 126, 183, 244, 252, 366, 427, 549, 732, 854, 1098, 1281, 1708, 2196, 2562, 3843, 5124, 7686, 15372, 1366163, 2732326, 4098489, 5464652, 8196978, 9563141, 12295467, 16393956, 19126282, 24590934, 28689423, 38252564, 49181868, 57378846, 83335943, 86068269, 114757692, 166671886, 172136538, 250007829, 333343772, 344273076, 500015658, 583351601, 750023487, 1000031316, 1166703202, 1500046974, 1750054803, 2333406404, 3000093948, 3500109606, 5250164409, 7000219212, 10500328818, 21000657636]

約数ペア:

[(1, 21000657636), (2, 10500328818), (3, 7000219212), (4, 5250164409), (6, 3500109606), (7, 3000093948), (9, 2333406404), (12, 1750054803), (14, 1500046974), (18, 1166703202), (21, 1000031316), (28, 750023487), (36, 583351601), (42, 500015658), (61, 344273076), (63, 333343772), (84, 250007829), (122, 172136538), (126, 166671886), (183, 114757692), (244, 86068269), (252, 83335943), (366, 57378846), (427, 49181868), (549, 38252564), (732, 28689423), (854, 24590934), (1098, 19126282), (1281, 16393956), (1708, 12295467), (2196, 9563141), (2562, 8196978), (3843, 5464652), (5124, 4098489), (7686, 2732326), (15372, 1366163)]