31399040

素因数分解:

$2^7\times 5^1\times {\mathrm{71}}^1\times {\mathrm{691}}^1$

素因数の和:781

約数の個数: 64

約数和(自身を含む): 76230720

約数和(自身を除く): 44831680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 128, 142, 160, 284, 320, 355, 568, 640, 691, 710, 1136, 1382, 1420, 2272, 2764, 2840, 3455, 4544, 5528, 5680, 6910, 9088, 11056, 11360, 13820, 22112, 22720, 27640, 44224, 45440, 49061, 55280, 88448, 98122, 110560, 196244, 221120, 245305, 392488, 442240, 490610, 784976, 981220, 1569952, 1962440, 3139904, 3924880, 6279808, 7849760, 15699520, 31399040]

約数ペア:

[(1, 31399040), (2, 15699520), (4, 7849760), (5, 6279808), (8, 3924880), (10, 3139904), (16, 1962440), (20, 1569952), (32, 981220), (40, 784976), (64, 490610), (71, 442240), (80, 392488), (128, 245305), (142, 221120), (160, 196244), (284, 110560), (320, 98122), (355, 88448), (568, 55280), (640, 49061), (691, 45440), (710, 44224), (1136, 27640), (1382, 22720), (1420, 22112), (2272, 13820), (2764, 11360), (2840, 11056), (3455, 9088), (4544, 6910), (5528, 5680)]