17981744

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1439}}^1$

素因数の和:1529

約数の個数: 40

約数和(自身を含む): 38568960

約数和(自身を除く): 20587216

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 71, 88, 142, 176, 284, 568, 781, 1136, 1439, 1562, 2878, 3124, 5756, 6248, 11512, 12496, 15829, 23024, 31658, 63316, 102169, 126632, 204338, 253264, 408676, 817352, 1123859, 1634704, 2247718, 4495436, 8990872, 17981744]

約数ペア:

[(1, 17981744), (2, 8990872), (4, 4495436), (8, 2247718), (11, 1634704), (16, 1123859), (22, 817352), (44, 408676), (71, 253264), (88, 204338), (142, 126632), (176, 102169), (284, 63316), (568, 31658), (781, 23024), (1136, 15829), (1439, 12496), (1562, 11512), (2878, 6248), (3124, 5756)]