21078447772

素因数分解:

$2^2\times {\mathrm{19}}^3\times {\mathrm{103}}^1\times {\mathrm{7459}}^1$

素因数の和:7623

約数の個数: 48

約数和(自身を含む): 39319571200

約数和(自身を除く): 18241123428

約数列:

[1, 2, 4, 19, 38, 76, 103, 206, 361, 412, 722, 1444, 1957, 3914, 6859, 7459, 7828, 13718, 14918, 27436, 29836, 37183, 74366, 141721, 148732, 283442, 566884, 706477, 768277, 1412954, 1536554, 2692699, 2825908, 3073108, 5385398, 10770796, 14597263, 29194526, 51161281, 58389052, 102322562, 204645124, 277347997, 554695994, 1109391988, 5269611943, 10539223886, 21078447772]

約数ペア:

[(1, 21078447772), (2, 10539223886), (4, 5269611943), (19, 1109391988), (38, 554695994), (76, 277347997), (103, 204645124), (206, 102322562), (361, 58389052), (412, 51161281), (722, 29194526), (1444, 14597263), (1957, 10770796), (3914, 5385398), (6859, 3073108), (7459, 2825908), (7828, 2692699), (13718, 1536554), (14918, 1412954), (27436, 768277), (29836, 706477), (37183, 566884), (74366, 283442), (141721, 148732)]