19865586

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{991}}^1$

素因数の和:1266

約数の個数: 32

約数和(自身を含む): 42997248

約数和(自身を除く): 23131662

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 257, 514, 771, 991, 1542, 1982, 2973, 3341, 5946, 6682, 10023, 12883, 20046, 25766, 38649, 77298, 254687, 509374, 764061, 1528122, 3310931, 6621862, 9932793, 19865586]

約数ペア:

[(1, 19865586), (2, 9932793), (3, 6621862), (6, 3310931), (13, 1528122), (26, 764061), (39, 509374), (78, 254687), (257, 77298), (514, 38649), (771, 25766), (991, 20046), (1542, 12883), (1982, 10023), (2973, 6682), (3341, 5946)]