19257808

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1217}}^1$

素因数の和:1291

約数の個数: 40

約数和(自身を含む): 39872448

約数和(自身を除く): 20614640

約数列:

[1, 2, 4, 8, 16, 23, 43, 46, 86, 92, 172, 184, 344, 368, 688, 989, 1217, 1978, 2434, 3956, 4868, 7912, 9736, 15824, 19472, 27991, 52331, 55982, 104662, 111964, 209324, 223928, 418648, 447856, 837296, 1203613, 2407226, 4814452, 9628904, 19257808]

約数ペア:

[(1, 19257808), (2, 9628904), (4, 4814452), (8, 2407226), (16, 1203613), (23, 837296), (43, 447856), (46, 418648), (86, 223928), (92, 209324), (172, 111964), (184, 104662), (344, 55982), (368, 52331), (688, 27991), (989, 19472), (1217, 15824), (1978, 9736), (2434, 7912), (3956, 4868)]