18734247

素因数分解:

$3^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1$

素因数の和:122

約数の個数: 80

約数和(自身を含む): 35312640

約数和(自身を除く): 16578393

約数列:

[1, 3, 7, 9, 19, 21, 27, 37, 47, 57, 63, 81, 111, 133, 141, 171, 189, 259, 329, 333, 399, 423, 513, 567, 703, 777, 893, 987, 999, 1197, 1269, 1539, 1739, 2109, 2331, 2679, 2961, 2997, 3591, 3807, 4921, 5217, 6251, 6327, 6993, 8037, 8883, 10773, 12173, 14763, 15651, 18753, 18981, 20979, 24111, 26649, 33041, 36519, 44289, 46953, 56259, 56943, 72333, 99123, 109557, 132867, 140859, 168777, 231287, 297369, 328671, 398601, 506331, 693861, 892107, 986013, 2081583, 2676321, 6244749, 18734247]

約数ペア:

[(1, 18734247), (3, 6244749), (7, 2676321), (9, 2081583), (19, 986013), (21, 892107), (27, 693861), (37, 506331), (47, 398601), (57, 328671), (63, 297369), (81, 231287), (111, 168777), (133, 140859), (141, 132867), (171, 109557), (189, 99123), (259, 72333), (329, 56943), (333, 56259), (399, 46953), (423, 44289), (513, 36519), (567, 33041), (703, 26649), (777, 24111), (893, 20979), (987, 18981), (999, 18753), (1197, 15651), (1269, 14763), (1539, 12173), (1739, 10773), (2109, 8883), (2331, 8037), (2679, 6993), (2961, 6327), (2997, 6251), (3591, 5217), (3807, 4921)]