20797264628

素因数分解:

$2^2\times 7^2\times {\mathrm{73}}^1\times {\mathrm{251}}^1\times {\mathrm{5791}}^1$

素因数の和:6133

約数の個数: 72

約数和(自身を含む): 43095677184

約数和(自身を除く): 22298412556

約数列:

[1, 2, 4, 7, 14, 28, 49, 73, 98, 146, 196, 251, 292, 502, 511, 1004, 1022, 1757, 2044, 3514, 3577, 5791, 7028, 7154, 11582, 12299, 14308, 18323, 23164, 24598, 36646, 40537, 49196, 73292, 81074, 128261, 162148, 256522, 283759, 422743, 513044, 567518, 845486, 897827, 1135036, 1453541, 1690972, 1795654, 2907082, 2959201, 3591308, 5814164, 5918402, 10174787, 11836804, 20349574, 20714407, 40699148, 41428814, 71223509, 82857628, 106108493, 142447018, 212216986, 284894036, 424433972, 742759451, 1485518902, 2971037804, 5199316157, 10398632314, 20797264628]

約数ペア:

[(1, 20797264628), (2, 10398632314), (4, 5199316157), (7, 2971037804), (14, 1485518902), (28, 742759451), (49, 424433972), (73, 284894036), (98, 212216986), (146, 142447018), (196, 106108493), (251, 82857628), (292, 71223509), (502, 41428814), (511, 40699148), (1004, 20714407), (1022, 20349574), (1757, 11836804), (2044, 10174787), (3514, 5918402), (3577, 5814164), (5791, 3591308), (7028, 2959201), (7154, 2907082), (11582, 1795654), (12299, 1690972), (14308, 1453541), (18323, 1135036), (23164, 897827), (24598, 845486), (36646, 567518), (40537, 513044), (49196, 422743), (73292, 283759), (81074, 256522), (128261, 162148)]