19786240

素因数分解:

$2^9\times 5^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1$

素因数の和:213

約数の個数: 80

約数和(自身を含む): 48612960

約数和(自身を除く): 28826720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 59, 64, 80, 118, 128, 131, 160, 236, 256, 262, 295, 320, 472, 512, 524, 590, 640, 655, 944, 1048, 1180, 1280, 1310, 1888, 2096, 2360, 2560, 2620, 3776, 4192, 4720, 5240, 7552, 7729, 8384, 9440, 10480, 15104, 15458, 16768, 18880, 20960, 30208, 30916, 33536, 37760, 38645, 41920, 61832, 67072, 75520, 77290, 83840, 123664, 151040, 154580, 167680, 247328, 309160, 335360, 494656, 618320, 989312, 1236640, 1978624, 2473280, 3957248, 4946560, 9893120, 19786240]

約数ペア:

[(1, 19786240), (2, 9893120), (4, 4946560), (5, 3957248), (8, 2473280), (10, 1978624), (16, 1236640), (20, 989312), (32, 618320), (40, 494656), (59, 335360), (64, 309160), (80, 247328), (118, 167680), (128, 154580), (131, 151040), (160, 123664), (236, 83840), (256, 77290), (262, 75520), (295, 67072), (320, 61832), (472, 41920), (512, 38645), (524, 37760), (590, 33536), (640, 30916), (655, 30208), (944, 20960), (1048, 18880), (1180, 16768), (1280, 15458), (1310, 15104), (1888, 10480), (2096, 9440), (2360, 8384), (2560, 7729), (2620, 7552), (3776, 5240), (4192, 4720)]