21803236

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{199}}^1$

素因数の和:273

約数の個数: 72

約数和(自身を含む): 49156800

約数和(自身を除く): 27353564

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 43, 49, 52, 86, 91, 98, 172, 182, 196, 199, 301, 364, 398, 559, 602, 637, 796, 1118, 1204, 1274, 1393, 2107, 2236, 2548, 2587, 2786, 3913, 4214, 5174, 5572, 7826, 8428, 8557, 9751, 10348, 15652, 17114, 18109, 19502, 27391, 34228, 36218, 39004, 54782, 59899, 72436, 109564, 111241, 119798, 126763, 222482, 239596, 253526, 419293, 444964, 507052, 778687, 838586, 1557374, 1677172, 3114748, 5450809, 10901618, 21803236]

約数ペア:

[(1, 21803236), (2, 10901618), (4, 5450809), (7, 3114748), (13, 1677172), (14, 1557374), (26, 838586), (28, 778687), (43, 507052), (49, 444964), (52, 419293), (86, 253526), (91, 239596), (98, 222482), (172, 126763), (182, 119798), (196, 111241), (199, 109564), (301, 72436), (364, 59899), (398, 54782), (559, 39004), (602, 36218), (637, 34228), (796, 27391), (1118, 19502), (1204, 18109), (1274, 17114), (1393, 15652), (2107, 10348), (2236, 9751), (2548, 8557), (2587, 8428), (2786, 7826), (3913, 5572), (4214, 5174)]