20706420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{7043}}^1$

素因数の和:7069

約数の個数: 72

約数和(自身を含む): 67453344

約数和(自身を除く): 46746924

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 7043, 14086, 21129, 28172, 35215, 42258, 49301, 70430, 84516, 98602, 105645, 140860, 147903, 197204, 211290, 246505, 295806, 345107, 422580, 493010, 591612, 690214, 739515, 986020, 1035321, 1380428, 1479030, 1725535, 2070642, 2958060, 3451070, 4141284, 5176605, 6902140, 10353210, 20706420]

約数ペア:

[(1, 20706420), (2, 10353210), (3, 6902140), (4, 5176605), (5, 4141284), (6, 3451070), (7, 2958060), (10, 2070642), (12, 1725535), (14, 1479030), (15, 1380428), (20, 1035321), (21, 986020), (28, 739515), (30, 690214), (35, 591612), (42, 493010), (49, 422580), (60, 345107), (70, 295806), (84, 246505), (98, 211290), (105, 197204), (140, 147903), (147, 140860), (196, 105645), (210, 98602), (245, 84516), (294, 70430), (420, 49301), (490, 42258), (588, 35215), (735, 28172), (980, 21129), (1470, 14086), (2940, 7043)]