21289020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1783}}^1$

素因数の和:1994

約数の個数: 48

約数和(自身を含む): 59942400

約数和(自身を除く): 38653380

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 199, 398, 597, 796, 995, 1194, 1783, 1990, 2388, 2985, 3566, 3980, 5349, 5970, 7132, 8915, 10698, 11940, 17830, 21396, 26745, 35660, 53490, 106980, 354817, 709634, 1064451, 1419268, 1774085, 2128902, 3548170, 4257804, 5322255, 7096340, 10644510, 21289020]

約数ペア:

[(1, 21289020), (2, 10644510), (3, 7096340), (4, 5322255), (5, 4257804), (6, 3548170), (10, 2128902), (12, 1774085), (15, 1419268), (20, 1064451), (30, 709634), (60, 354817), (199, 106980), (398, 53490), (597, 35660), (796, 26745), (995, 21396), (1194, 17830), (1783, 11940), (1990, 10698), (2388, 8915), (2985, 7132), (3566, 5970), (3980, 5349)]