31889650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{691}}^1$

素因数の和:787

約数の個数: 48

約数和(自身を含む): 64870848

約数和(自身を除く): 32981198

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 71, 130, 142, 325, 355, 650, 691, 710, 923, 1382, 1775, 1846, 3455, 3550, 4615, 6910, 8983, 9230, 17275, 17966, 23075, 34550, 44915, 46150, 49061, 89830, 98122, 224575, 245305, 449150, 490610, 637793, 1226525, 1275586, 2453050, 3188965, 6377930, 15944825, 31889650]

約数ペア:

[(1, 31889650), (2, 15944825), (5, 6377930), (10, 3188965), (13, 2453050), (25, 1275586), (26, 1226525), (50, 637793), (65, 490610), (71, 449150), (130, 245305), (142, 224575), (325, 98122), (355, 89830), (650, 49061), (691, 46150), (710, 44915), (923, 34550), (1382, 23075), (1775, 17966), (1846, 17275), (3455, 9230), (3550, 8983), (4615, 6910)]