905380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{223}}^1$

素因数の和:268

約数の個数: 48

約数和(自身を含む): 2257920

約数和(自身を除く): 1352540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 223, 290, 406, 446, 580, 812, 892, 1015, 1115, 1561, 2030, 2230, 3122, 4060, 4460, 6244, 6467, 7805, 12934, 15610, 25868, 31220, 32335, 45269, 64670, 90538, 129340, 181076, 226345, 452690, 905380]

約数ペア:

[(1, 905380), (2, 452690), (4, 226345), (5, 181076), (7, 129340), (10, 90538), (14, 64670), (20, 45269), (28, 32335), (29, 31220), (35, 25868), (58, 15610), (70, 12934), (116, 7805), (140, 6467), (145, 6244), (203, 4460), (223, 4060), (290, 3122), (406, 2230), (446, 2030), (580, 1561), (812, 1115), (892, 1015)]