18688131

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:217

約数の個数: 64

約数和(自身を含む): 35251200

約数和(自身を除く): 16563069

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 89, 99, 101, 189, 231, 267, 297, 303, 623, 693, 707, 801, 909, 979, 1111, 1869, 2079, 2121, 2403, 2727, 2937, 3333, 5607, 6363, 6853, 7777, 8811, 8989, 9999, 16821, 19089, 20559, 23331, 26433, 26967, 29997, 61677, 62923, 69993, 80901, 98879, 185031, 188769, 209979, 242703, 296637, 566307, 692153, 889911, 1698921, 2076459, 2669733, 6229377, 18688131]

約数ペア:

[(1, 18688131), (3, 6229377), (7, 2669733), (9, 2076459), (11, 1698921), (21, 889911), (27, 692153), (33, 566307), (63, 296637), (77, 242703), (89, 209979), (99, 188769), (101, 185031), (189, 98879), (231, 80901), (267, 69993), (297, 62923), (303, 61677), (623, 29997), (693, 26967), (707, 26433), (801, 23331), (909, 20559), (979, 19089), (1111, 16821), (1869, 9999), (2079, 8989), (2121, 8811), (2403, 7777), (2727, 6853), (2937, 6363), (3333, 5607)]