212543440

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{85703}}^1$

素因数の和:85747

約数の個数: 40

約数和(自身を含む): 510110208

約数和(自身を除く): 297566768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 85703, 171406, 342812, 428515, 685624, 857030, 1371248, 1714060, 2656793, 3428120, 5313586, 6856240, 10627172, 13283965, 21254344, 26567930, 42508688, 53135860, 106271720, 212543440]

約数ペア:

[(1, 212543440), (2, 106271720), (4, 53135860), (5, 42508688), (8, 26567930), (10, 21254344), (16, 13283965), (20, 10627172), (31, 6856240), (40, 5313586), (62, 3428120), (80, 2656793), (124, 1714060), (155, 1371248), (248, 857030), (310, 685624), (496, 428515), (620, 342812), (1240, 171406), (2480, 85703)]