2123660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{197}}^1$

素因数の和:231

約数の個数: 72

約数和(自身を含む): 5688144

約数和(自身を除く): 3564484

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 197, 220, 245, 308, 385, 394, 490, 539, 770, 788, 980, 985, 1078, 1379, 1540, 1970, 2156, 2167, 2695, 2758, 3940, 4334, 5390, 5516, 6895, 8668, 9653, 10780, 10835, 13790, 15169, 19306, 21670, 27580, 30338, 38612, 43340, 48265, 60676, 75845, 96530, 106183, 151690, 193060, 212366, 303380, 424732, 530915, 1061830, 2123660]

約数ペア:

[(1, 2123660), (2, 1061830), (4, 530915), (5, 424732), (7, 303380), (10, 212366), (11, 193060), (14, 151690), (20, 106183), (22, 96530), (28, 75845), (35, 60676), (44, 48265), (49, 43340), (55, 38612), (70, 30338), (77, 27580), (98, 21670), (110, 19306), (140, 15169), (154, 13790), (196, 10835), (197, 10780), (220, 9653), (245, 8668), (308, 6895), (385, 5516), (394, 5390), (490, 4334), (539, 3940), (770, 2758), (788, 2695), (980, 2167), (985, 2156), (1078, 1970), (1379, 1540)]